Journal of Southwest Petroleum University(Science & Technology Edition)

Select

PROBING RESEARCH OF CRUDE OIL NOBL GAS FROM THE JIUXI BASIN

LI Xiu-fen ZHANG Xiao-bao MA Li-yuan.

西南石油大学学报(自然科学版) 2004, 26 (1): 1-4. DOI: 10.3863/j.issn.1000-2634.2004.01.001

Abstract （826）

PDF（pc）（417KB）（703）

Save

The noble gas isotope of 8 crude oil samples of the Qingxi oil field in the Qingxi depression and Yaerxia oil field in the Southern uplift in the Jiuxi basin was measured. He source of the crude oils was discussed. The 3He/4He(Rc)ratios of the crude oil noble gases from 4 wells in the Qingxi oil field, the 527 well and the 702 well in the Yaerxia oil field reach an order of 10-8,indicating a crust radioactive source. This shows that the overthrusts related to the Qingxi oil field and the 527 well and the 702 well in the Yaerxia oil field cut into the depth of the crust. The 3He/4He(Rc)ratios of the crude oil noble gases
from the 501 well and the 114 well in the Yaerxia oil field is up to an order of 10-7, showing the input of a minor amount of mantle-derived helium and the cutting depth of the overthrusts associated with the two wells into the mantle. The geothermal flow of the Jiuxi basin is lower than that of the basins of eastern China, displaying that the basin has weak tectonic activity.

Related Articles | Metrics

Select

ANALYSIS OF THE BASEMENT SUBSIDENCE OF THE CENOZOIC OVERBURDEN OF THE WESTERN KUQA DE-PRESSION

CHEN Shu-ping; TANG Liang-jie; JIA Cheng-zao et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 5-8. DOI: 10.3863/j.issn.1000-2634.2004.01.002

Abstract （935）

PDF（pc）（311KB）（816）

Save

Based on the sandstone and mudstone percentage obtained from the relationship of interval seismic velocity to these and other parameters required, the total subsidence and tectonic subsidence were computed to the basement of the overburden.The subsiding curves could be categorized as two types, concave and convex, based on their shape. The former is the character-
istics of the subsiding curves of the depression near the North Monocline, and the later the other tectonic belts of the Kuqa depression. Subsiding velocity changes of different evolutionary stages show the coupling between the Kuqa depression and the Tianshan mountain. Based on the relationship between the total and tectonic subsiding curves, the convex subsiding curves can
be further divided into two secondary types: harmonious and disharmonious. The later shows salt flow, which happened a-long the south limb of Kelasu tectonic belt.

Related Articles | Metrics

Select

THE RESOURCE OF NATURAL GAS IN CHINA

LIU Cheng-lin; LI Jing-ming LI Jian et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 9-12. DOI: 10.3863/j.issn.1000-2634.2004.01.003

Abstract （1549）

PDF（pc）（335KB）（924）

Save

On basis of a lot of statistics, natural gas resource of China is studied from its type, accumulation, and distribution. First, the history of exploration of conventional gas is divided into four stages, the reserves of conventional gas have been improved three step types and the reserves of conventional gas are mainly distributed in the six major basin. Second, the reserves of con-
ventional gas are mainly distributed in sea basin of East, Mid-dle, Northern-Western. The conventional gas resource in China is with features of old strata, low richness, and low proved rate. Third, the resource of coalbed Methane of China is mainly distributed in Eastern, Middle, and Northern-Western China.
Fourth, general tight sandstone gas and deep basin gas is two different types of tight sandstone gas. There is the superior fac-tor to form deep basin gas and there is much resource of deep basin gas. Fifth, South China Sea, East China Sea, Tibet Pla-teu, and North-East China are rich in natural gas hydrate.
Sixth, there is a lot of formation water in petroleum basins in China, where water soluble gas is largely existing. In the end,shale gas, deep source gas, CO2and H2S resource are plenty,which should not be neglected in China.

Related Articles | Metrics

Select

THE STUDY OF THE OIL-BEARING CHARACTERISTICS OF DA’ANZHAI OIL RESERVOIR

TANG Hong

西南石油大学学报(自然科学版) 2004, 26 (1): 13-15. DOI: 10.3863/j.issn.1000-2634.2004.01.004

Abstract （918）

PDF（pc）（309KB）（782）

Save

Da’anzhai oil reservoirs are the chief production zones of Chuanzhong oil field. Most of oil and gas are from the Da’anzhai carbonate formation. With the long time past, the out-put decreases and some wells are even exhausted. So it is much necessary to study the oil-bearing characteristics and predict the output. In the paper, the reservoirs are classified into three
types by oil productivity: dry zones, low production zones and high production zones. The qualitative characteristics of the dif-ferent types are reduced according to the information of well logging, geology and production test, and the models of produc-tion formation are set up. Eventually, the methods are formed,which is used to select pay zone and predict the productivity.

Related Articles | Metrics

Select

APPLYING SOURCE VESSEL TO UNDERSHOOTING IN3-D MARINE SEISMIC SURVEY

LU Jun ZHANG Bai-lin YANG Kai

西南石油大学学报(自然科学版) 2004, 26 (1): 16-18. DOI: 10.3863/j.issn.1000-2634.2004.01.005

Abstract （1084）

PDF（pc）（271KB）（768）

Save

During the process of acquiring 3-D seismic data, there wil be platform, reef or small island in the work area sometimes.Undershooting is a good way to acquire the data of that obsta cle. By principle of acquiring 3-D seismic data, it is acceptabl to get enough data of underground in the explore surface if th
data with enough coverage and the gridnet of geophone is satified the 3-D sampling principle. The principle of undershootin and the configurations of source and navigation system and in stallation of near field hydrophone of source vessel have been explained. In practice, source vessel with this way has gotten excellent effect.

Related Articles | Metrics

Select

A NEW METHOD OF WELL STRUCTURE DESIGN BY SALT ROCK CREEP PRESSURE PROFILE

LIU Hui-xin ZHANG Peng XIONG You-ming.

西南石油大学学报(自然科学版) 2004, 26 (1): 19-22. DOI: 10.3863/j.issn.1000-2634.2004.01.006

Abstract （878）

PDF（pc）（332KB）（1146）

Save

The effect well construction investing risk is a general problem in the world. The key of the study of the well structure design considering the salt creep is the design idea must be changed. In order to satisfy the salt formation, it should be considered two factors: one is the salt creep pressure profile; the
other is the salt creep well pressure curve. Finally, the reasonable well construction will extend the well life and the synthetical economic benefits will be obtained. According to the results of the study of the salt creep rules, the results of the well con struction were successfully applied in Tarimy Qiucan Well 1.

Related Articles | Metrics

Select

TRANSIENT PERFORMANCE PREDICTION OF HORI-ZONTAL WELL WITH COUPLED IN WELLBORE AND RESERVOIR PART1: MATHEMATIC MODEL

DUAN Yong-gang CHEN Wei HUANG Cheng et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 23-25. DOI: 10.3863/j.issn.1000-2634.2004.01.007

Abstract （759）

PDF（pc）（217KB）（721）

Save

It is an important base for the analysis to reservoir engineering and the design for the oil production method to how tpredict the productivity of the horizontal well accurately. For it self theoretical limitation, there is the serious error on the commonly method to predict the stable productivity. This paper i
based on the unsteady flow theory and looks on the reservoi flow and wellbore flow of horizontal well as a coupling system.The transient flow mathematic model under the coupling of th reservoir and wellbore was established. It has considered som complicated factor, such as the fluid friction loss, the change omomentum, the inflow of the sidewall of wellbore etc. Th
model is based on boundary integral method and can assembl with any reservoir model. It will provide the advanced metho for horizontal well to research reservoir engineering, the wel completion and oil production design.

Related Articles | Metrics

Select

TRANSIENT PERFORMANCE PREDICTION OF HORI-ZONTAL WELL WITH COUPLED IN WELLBORE AND RESERVOIR PART2: COMPUTABLE MODEL

HUANG Cheng CHEN Wei DUAN Yong-gang et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 26-28. DOI: 10.3863/j.issn.1000-2634.2004.01.008

Abstract （878）

PDF（pc）（369KB）（750）

Save

Based on coupling wellbore and reservoir, the forecasting-productivity model of the horizontal wells were presented by Duan Yong-gang and Chen Wei, and that Cinco’s method to calculate transient pressure of finite conductivity vertical frac-tures well, this paper found a predicting productivity calculation
model and formulas in Laplace space, for the convenient and the practicality to apply in oil field.Therefore, it could apply a great deal of existent flow models of the horizontal wells and it’s pressure solution in the reservoir models. By iterative solution,some important information would be obtained such as the flow flux and pressure drop in wellbore etc.

Related Articles | Metrics

Select

TRANSIENT PERFORMANCE PREDICTION OF HORI ZONTAL WELL WITH COUPLED IN WELLBORE AN RESERVOIR PART3: CASE ANALYSIS

CHEN Wei DUAN Yong-gang HUANG Chenget al.

西南石油大学学报(自然科学版) 2004, 26 (1): 29-31. DOI: 10.3863/j.issn.1000-2634.2004.01.009

Abstract （1491）

PDF（pc）（318KB）（857）

Save

This paper applied the transient performance prediction model of horizontal well with coupled wellbore and reservoir that was found by Duan yong-gang etc to calculate and verify the model according to the result. The calculated results indi-cated that the effect of the horizontal well and reservoir form
and parameters are fully considered in the model. In the hori-zontal well, because the frictional drop is far bigger than accel-eration drop, in the fact application we can ignore the effect of acceleration of liquid in the wellbore. The horizontal well has an optimal horizontal length range. We can rapidly find out the op-timal length by using the coupled model. The coupled model de-
veloped had finer extended capability and provides a universal mode for reservoir engineering studies in different condition.

Related Articles | Metrics

Select

IMPROVED GAS FLOW EQUATION IN LOW PERME ABILITY RESERVOIRS

WANG Bin MEI Hai-yan ZHANG Mao-lin et al

西南石油大学学报(自然科学版) 2004, 26 (1): 32-34. DOI: 10.3863/j.issn.1000-2634.2004.01.010

Abstract （1660）

PDF（pc）（296KB）（867）

Save

Darcy’s law, the principle law through porous media, put forward one hundred years ago, was derived by experiments with liquid. For gas flow in porous media, a slippage effect ex-ists, especially when pressure is low, or velocity is low or per-meability is low. Gas flow equation in porous media with a slip-page effect was presented, combining with molecular diffusion
theory. It is a theoretical foundation for further study on per-meable theory, reservoir engineering, and performance analysis in low gas permeability reservoirs.

Related Articles | Metrics

Select

STUDY OF THE REASONABLE RATIO OF SPACE BE-TWEEN WELLS AND ROWS IN LOW PERMEABILITY RESERVOIRS

LI Zhong-xing HAN Hong-bao CHENG Lin-song.

西南石油大学学报(自然科学版) 2004, 26 (1): 35-38. DOI: 10.3863/j.issn.1000-2634.2004.01.011

Abstract （976）

PDF（pc）（385KB）（1054）

Save

Based on fluid flowing through porous media mechanisms and the geologic characteristic of exploitation, 102 geologic models were established in low permeability reservoir of Changqing oil field in this paper. Using numerical simulation,102 schemes were designed and calculated in rhomboidal and
rectangular well patterns. A theoretical plate of reasonable ratio of space between wells and rows in different well patterns were studied, and different anisotropy degree formations of low per-meability reservoirs were determined. Through the theoretical plate, the reasonable ratio of space between wells and rows was easily acquired. All these things will provide theoretical supports
for designing the exploitation schemes.

Related Articles | Metrics

Select

REMIND OIL DISTRIBUTION AND IMPROVEMENT PRO DUCTION POTENTIAL STUDY ON HIGH WATER CU COMPLEX FAULT BLOCK OIL RESERVOIR

TU Xing-wan; CHEN Lin-yuan; MUO Wen-li et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 39-42. DOI: 10.3863/j.issn.1000-2634.2004.01.012

Abstract （1446）

PDF（pc）（243KB）（773）

Save

The oil remaining distribution is complicated in high water content ratio continental facies complex fault block oil reservoir, so the reservoir simulation is difficult. In this paper, the dy-namical static data was obtained based on the reservoir detailed description of Ma 11, the result combined with thick gridding
simulation to study the oil reaming distribution. Aimed at the reservoir oil remaining specialty and economic technology, put into effect the plan of the improvement the oil remaining pro-duction potential which consisted of the adjustment well, profile modification, water plugging, well major repair etc. Now, the reservoir water cut smart decline, oil recovery rate is climb and
the recovery ratio improve 0.7 percent. The fact proved, this means improves the precision and reliability of oil remaining dis-tribution study.

Related Articles | Metrics

Select

RESERVOIR CORE POROSITY AND POROSITY DISTRI-BUTION MEASUREMENT USING TECHNOLOGY OF-RAYS INDUSTRIAL COMPUTERIZED TOMOGRAPHY

YI Min HUANG Rui-yao SUN Liang-tian et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 43-46. DOI: 10.3863/j.issn.1000-2634.2004.01.013

Abstract （854）

PDF（pc）（264KB）（680）

Save

This paper put forward a ICT (Industrial Computerized Tomography) measuring way of density difference which mea-sures the porosity distribution of reservoir core for the further studying of porous structure and the porosity distribution using technology of ICT, and the measuring way have been applied to measure the porosity and porosity distribution of a core sample
from certain oilfield. The result indicates that the CT density difference method is effective to measure the porosity distribu-tion. The method is faster and more accurate than conventional methods, and it has also the merit, such as no damage to core sample and similar to formation condition. Therefore, it is an advanced method for measuring the rocks properties and follow-
ing the tracks of formation fluid.

Related Articles | Metrics

Select

CONTRASTING AND ANALYZING THE UTILITY ARITH-METIC FOR CALCULATING THE Z-FACTOR OF SOUR GAS

WANG Zhou-hua;GUO Ping;LI Hai-ping;etal.

西南石油大学学报(自然科学版) 2004, 26 (1): 47-50. DOI: 10.3863/j.issn.1000-2634.2004.01.014

Abstract （813）

PDF（pc）（230KB）（861）

Save

Based on a lots of literatures, the paper summarized the methods for calculating the z-factor of gas on the base of reading lots of related literature; and discussed the methods and process-es for correcting the systematic critical parameters due to the in-fluence of the CO2and H2S when calculating the Z-factor; final-ly the different results from different methods were contrasted and analyzed.

Related Articles | Metrics

Select

A NEW METHOD CALCULATING THE POSITION O SAND JAM IN THE FRACTURE

WANG Zheng-mao LI Zhi-ping LI Yun et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 51-53. DOI: 10.3863/j.issn.1000-2634.2004.01.015

Abstract （1699）

PDF（pc）（308KB）（835）

Save

Sands can be jammed the fracture during the fracturing construction. If sands jam is effective, it can affect fracturing pressure. In order to exactly calculate the position of sands jam in the fracture, fracturing pressure can be analyzed. By drawing the double logarithmic curves of fracturing pressure and con
struction time, the data of pressure response could be obtaine after sands jam happened. By their linear regression, the slop of straight-line segment could be obtained. Then, the positio of sands jam in the fracture was calculated by the slope and correlative fracture parameter. It is very significant to correctly di
rect fracturing construction and obtain fracture with high quality.

Related Articles | Metrics

Select

EXPERIMENTAL RESEARCH ON POLYMER-FIXED TECHNOLOGY OF DOUBLE-FLUID METHOD AFTER POLYMER FLOODING

XU Ting LI Xiu-sheng ZHANG Xue-hong et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 54-57. DOI: 10.3863/j.issn.1000-2634.2004.01.016

Abstract （761）

PDF（pc）（412KB）（790）

Save

To the condition of water flooding after polymer flooding,due to improper mobility ratio, following water will quickly breakthrough the bank of polymer to production wells, which cause water cut in production wells in a short time. To solve this problem, polymer-fixed technology of double-fluid method has been put forward in this paper. Results show that applica-tion of the technology after polymer flooding could fully fix high concentration polymer in site and the formed gel system will ef-fectively plug these high permeability channels, impel following water to strata of medium and low permeability and improve the
oil recovery after polymer flooding. To restoring water flooding after polymer flooding, the technology of flocculating and poly-mer-fixed technology of double-fluid method can fully flocculate low concentration polymer and effectively fix high concentration polymer in site, which can plug effectively high permeability strata, improve greatly the water injection profile, the sweep
efficiency of succeeding water flooding and the oil recovery of water flooding.

Related Articles | Metrics

Select

DEVELOPMENT OF FOAM DIVERSION ACIDIZING MODEL

HUANG Ying-hui ZHAO Li-qiang CHEN Ji-mei et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 58-60. DOI: 10.3863/j.issn.1000-2634.2004.01.017

Abstract （842）

PDF（pc）（398KB）（708）

Save

Foam can efficiently divert acid into low-permeable and population formation to optimize acid placement. Foam diver-sion acidizing model has been developed form foam displacement simulation. The model currently includes critical capillary pres-sure model based on fractional-flow theory, bubble population
correlation and Robert-Mack model. Present foam diversion model in matrix acidizing are presented in this paper and further work and improvement in this field are discussed and put for-ward.

Related Articles | Metrics

Select

STUDY ON THE FORMULATION OF A FOAMED POLY-MER

YANG Jian-jun YE Zhong-bin SHI Lei-ting et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 61-64. DOI: 10.3863/j.issn.1000-2634.2004.01.018

Abstract （956）

PDF（pc）（257KB）（688）

Save

Based on analyzing the limitation of polymer flooding in practical application, a foamed polymer system has been proposed, which can be formed in situ and can solve the problem obypass when polymer flows through large channel alone. In order to determine a formulation of the foamed polymer, uniform
design, a method of experimental design, as well as the DPS software which can process the experimental data, have been used. So the primary factors of effecting the foamed polymer system have been obtained.

Related Articles | Metrics

Select

PERFORMANCE INFLUENCE FOCTOR AND PRACT OF FOAMED ACID

GUAN Fu-jia YAO Guang-qing LIU Jian-min.

西南石油大学学报(自然科学版) 2004, 26 (1): 65-67. DOI: 10.3863/j.issn.1000-2634.2004.01.019

Abstract （874）

PDF（pc）（335KB）（818）

Save

In conventional acidizing to low permeability reservoir, the formation will be damaged again owing to the unthorough flow-back of the spent acid, so foamed acid has been used. The per formance and influence factors of the foamed acid have been in troduced detailed in this paper, and some successful experiences in field have been listed, so that its excellent performance of can
be illuminated farther.

Related Articles | Metrics

Select

RESEARCH OF DISPERSANT FOR COLLOID POLYMER GRANULATION

ZHAO Pu-chun

西南石油大学学报(自然科学版) 2004, 26 (1): 68-70. DOI: 10.3863/j.issn.1000-2634.2004.01.020

Abstract （1312）

PDF（pc）（331KB）（779）

Save

A new formulation of dispersant has been developed by or-thogonal test method in laboratory. The dispersant is used to granulate a certain colloid polymer and composed of 10% tech-nical soap, 60% kerosene and 30% tap water. At the same time, its validity, the influence on the polymer performance, e-conomic benefit and so on, are considered. The new dispersant has the same granulation performance, operation method and u-nit volume (weight) for granulation as the ordinary one, and under the same conditions, it shows much better characters of homogeneous granulation.

Related Articles | Metrics

Select

CONTACT STRESS ANALYSIS OF THE DRILLING PUMP PISTON

XIA Yuan-bai JIANG Chun-mei L Zhi-zhong.

西南石油大学学报(自然科学版) 2004, 26 (1): 71-74. DOI: 10.3863/j.issn.1000-2634.2004.01.021

Abstract （856）

PDF（pc）（391KB）（750）

Save

The seal and friction wear efficiency of the drilling pump piston mainly depended on the contact stress description be-tween the rubber seal ring and the inside hole of cylinder, so the research of contact stress has a realistic and important meaning.In the article, the contact stress description of piston was ob-tained in static and moving process by finite element method.At the same time, the contact stress description was analyzed under changing piston’s size and the pressure.

Related Articles | Metrics

Select

ANALYSIS OF THE RUPTURE AND OUT OF JOINT OF THE SUCKER ROD

CAI Jun-jie

西南石油大学学报(自然科学版) 2004, 26 (1): 75-78. DOI: 10.3863/j.issn.1000-2634.2004.01.022

Abstract （784）

PDF（pc）（464KB）（617）

Save

The paper analyzed the cause of the sucker rod ruptured and out of joint rising continuous from the first oil plant of Henan oil field in detail. At the same time, this paper presented the techniques and managements to lessen the sucker rod rup-tured and out of joint which will produce some effect in reducing the maintenance of well repair and increasing the no-well repair
period.

Related Articles | Metrics

Select

SOFTWARE SYSTEM OF THE OIL-FIELD EXPLOITATION PROGRAMMING AND DECISION-MAKING

LIU Zhi-bin FU Qing-shan DING Hui et al

西南石油大学学报(自然科学版) 2004, 26 (1): 79-82. DOI: 10.3863/j.issn.1000-2634.2004.01.023

Abstract （776）

PDF（pc）（419KB）（667）

Save

In order to solve the prediction of the development dynam-ic, the optimal structure of the oil-output, the optimal structure of the measure, the optimal collocation of the oil-output, the optimal control of the measure, the general programming scheme and so on, the software structure design and the data
flow was analyzed from the demand of the consumer. The mod-ule functional design was finished, and the software system of the oil-field development programming and decision-making was written. Finally, the software system was successful in applying to many oil fields.

Related Articles | Metrics

Select

APPLICATION OF COMPASS WELLPLAN SOFTWARE IN DRILLING DESIGN AND FIELD PROCESSING

HUA Yuan-xin ZHANG Gui-qiang ZHU Wei-hong et al.

西南石油大学学报(自然科学版) 2004, 26 (1): 83-86. DOI: 10.3863/j.issn.1000-2634.2004.01.024

Abstract （1882）

PDF（pc）（303KB）（822）

Save

With the development of the oil field exploration, the quantity of the highly difficult well increases constantly, we had gotten COMPASS and WELLPLAN application software of LANDMARK to satisfy drilling design and field processing.The functions of these two sets of software are very strong.
They satisfied the highly difficult well design and field process-ing better in these two years. The level of drilling design and field processing was improved. The difficult problems that ex-isted originally in drilling have been solved. Production efficien-cy was improved, and the cost of drilling was reduced. The most important thing is that they can offer the reliable decision
for leadership, and turn science and technology into productivi-ty.

Related Articles | Metrics

Select

RESEARCH ON THE INTEGRATION PLOT FOR BORE-HOLE PATH AND STRATIGRAPHIC SECTION AND LOG-GING CURVE

FAN Xiang-yu XIA Hong-quan CHEN Ping et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 1-3. DOI: 10.3863/j.issn.1000-2634.2004.02.001

Abstract （1434）

PDF（pc）（240KB）（689）

Save

Based on the mathematical theory of analytical geometry of three dimensions and computer graphics, the paper does some im-portant research on the integration plot forwell track and stratigraph-ic section and borehole log.Aset of application program compiled by VB6.0 language has been successfully applied to realize the integra-tion plot and bring outthe three-dimensional contact relation between well track and formation visually. Meanwhile, the plot has endued the well track with 3D geologic information and logging information.Through the interpretation for substantive practical material, it
proves that the program is useful and 3D visualization plot powerful.
The conclusion of the study offers researcher some effectual help to carry out geologic parameter interpretation and geosteering of wire-line logging or logging while drilling for horizontal well and high an-gle deviated hole.

Related Articles | Metrics

Select

FAULTS FEATURE AND HYDROCARBON ACCUMULA-TION IN SLOPE ZONE IN BIYANG DEPRESSION

LI Lian-sheng; ZHU Jun LI Hui et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 4-6. DOI: 10.3863/j.issn.1000-2634.2004.02.002

Abstract （902）

PDF（pc）（263KB）（645）

Save

The slope zone of Biyang depression developed many faults and has complicated faults system. This paper pointed out that main fault’s scale and continuity and arrangement relationship with sand-body distribution and axial direction of the nose structure control the hydrocarbon migration and pool type and accumulation and enrich-ment through studying on feature of faults system and hydrocarbon accumulation in slope zone of Biyang depression. The second hydro-carbon Exploration is very successful based on these study.

Related Articles | Metrics

Select

THIN LAYER DIVISION AND CONTRAST OF THE SHAXI STRUCTURE N1-N12OIL RESERVOIR

CHENG Xin-ling;MU Zhong-hai;MALi-ning;et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 7-10. DOI: 10.3863/j.issn.1000-2634.2004.02.003

Abstract （843）

PDF（pc）（337KB）（633）

Save

Thin layer division and contrast is the foundation for the en-forcement of oil field development scheme,but general method of thin layer division and contrast have certain limitation. To surmount this defect,this paper have applied a new method to carry out thin layer division and contrast. This method is according to the view-point of Sequence Stratigraphy, on the basis of thicker sequence di-vision, with the Parasequence methods, Parasequence group meth-ods, isotime methods and slice methods and so on to carry out the thin layer division and contrast for shaxi structure N1-N12oil reser-
voir. According to the contrast result of oil-water relation and thin layer division, with this method of integration analysis, it is practi-cal and feasible to carry out thin layer division and contrast.

Related Articles | Metrics

Select

THE MODELLING AND APPLICATION OF PLANNING MEASUREMENT AND STRUCTURE OPTIMATION OF OILFIELD PRODUCTION

XIE Xian-jun LIUZhi-bin DUYu-hong et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 11-14. DOI: 10.3863/j.issn.1000-2634.2004.02.004

Abstract （736）

PDF（pc）（296KB）（647）

Save

The correlative relationship of the development index of oilfield can be established by use of functional simulation theory(such as differential simulation method and NN method), the authors re-searched the oilfield(oil production plant or development unit) and set up the optimal models of measure structure with different goals,including maximum measure oil-output(fixed measure workload ,fixed measure cost);minimum measure cost(fixed measure oil-out-put,fixed measure workload) and maximum economic benefit(fixed measure workload, fixed measure oil-output, fixed measure cost),
which solved the optimal structure problems successfully with each subentry measure oil-output (usually contained fracture oil-output、acidification oil-output、overhaul oil-output、other measure oil-output and so on) and the corresponding measure workload and other de-velopment index of oilfield (or oil production plant). The satisfacto-ry economic benefit can be obtained that applied the models into de-velopment programming in some oilfield, which was in the mid-late stage.

Related Articles | Metrics

Select

EXPERIMENT STUDY OF LONGITUDINAL METAL FLOW OF SOLID EXPANDABLE TUBULAR

ZHANG Jian-bing SHI Tai-he XU Qian et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 15-17. DOI: 10.3863/j.issn.1000-2634.2004.02.005

Abstract （1738）

PDF（pc）（172KB）（770）

Save

Longitudinal metal flowof solid expandable tubularwas studied according to stimulant mechanical environment of borehole in this paper. The 35CrMomaterial pipe was selected to be tested. Meshed experiment was adopted to study the plastic deformation of metal. The results of the test and analysiswere indicated the metal flowwas non-uniform on the longitudinal direction of tubular. The results of metallographic examination have proved that the results of meshed experiment is correct, it is concluded that meshed experiment can be used to research the oilfield tubular goods.

Related Articles | Metrics

Select

RESEARCH ON THE CHANGE LAWS OF THE OIL-POOL PHYSICAL PROPERTY IN THE PROCESS OF THE WATER FLOODING IN THE OILFIELD

BAO Xiang-sheng YIN Cheng FU Zhi-guo et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 18-21. DOI: 10.3863/j.issn.1000-2634.2004.02.006

Abstract （782）

PDF（pc）（299KB）（750）

Save

The water flooding in the oilfield can cause the change of not only reservoir fluid saturation, but also reservoir temperature and pressure. These variations pose the different influences on the seis-mic velocity, and can be reflected on the time-lapse seismic profile.For analyzing and discussing the alone or integrated variety laws that temperature, pressure and saturation of water function cause, this paper makes full use of the Biot-Gassmann equation, and combine the other experiential formulas to get the volume modulus of fluid and the elastic modulus of rock. Throughthe study of the variety law of the velocity of sandstone strata of Bohai oilfield, its results will help us to acknowledge the time-lapse seismic monitoring technique,and improve the ability of recognizing the oil-pool’s change of the time-lapse monitoring in the area.

Related Articles | Metrics

Select

A SCREENING CANDIDATE RESERVOIR FOR GAS IN-JECTION WAY BASED ON CHARACTERISTIC PARAME-TER’S COMPREHENSIVE WEIGHT OPTIMIZATIONMETHOD

XIONG Yu XIONG Yu-bin CHEN Tian-gang

西南石油大学学报(自然科学版) 2004, 26 (2): 22-25. DOI: 10.3863/j.issn.1000-2634.2004.02.007

Abstract （482）

PDF（pc）（330KB）（756）

Save

Several parameters have been screen out for evaluating affection of gas miscible and immiscible injection based on studying all factors affecting displacement behavior. Ranks and distribution functions,as well as point models of each factor collected from application ex-ample in literature have also been presented in paper. A characteris-tic parameter’s comprehensive weight optimization method for screening candidate oil reservoir for gas injection has been built up by introducing Fuzzy Analytical Hierarchy Process and Integrated Weighting Point Process. Application in three practical reservoirs in-dicates it is a successfulway of combining two sides of subjective af-fection to evaluating and objective suitability for gas injection. Inte-
grated evaluation results by using this way given in the paper can give right potentiality and orderfor all candidate oil reservoirs forgas injection.

Related Articles | Metrics

Select

THE EFFECTS OF WELL TRAJECTORY AND AZIMUTH ON SAND PRODUCTION OF BARE WELL COMPLETION FORMATION

LIUXiang-jun HE Xiang-qin LUO Ping-ya et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 26-28. DOI: 10.3863/j.issn.1000-2634.2004.02.008

Abstract （776）

PDF（pc）（240KB）（683）

Save

The effects ofwell trajectory and azimuth on sand production of bare well completion formation have been studied quantitatively in this paper with a commercial finite element software and Equivalent Plastic Strain. The results show that both the maximal plastic strain and the plastic area increase with well angle that ranges from 0 o to 45°at given in-situ stress and formation. The sand production in-creases too. The maximal plastic strain decreases with well angle that ranges from 45°to 90°, and the sand production decreases too.The plastic zone changes with well azimuth, even though well angle is same. It is better for sand control that Well, especially horizontal well drilling should be along with in-situ horizontal stress.

Related Articles | Metrics

Select

A PROBE OF SHALLOW TERTIARY GAS FORMATION PRODUCTION LAW IN LU LIANG AND BAO SHAN BASIN, YUN NAN PROVINCE

WANG Nen-fan

西南石油大学学报(自然科学版) 2004, 26 (2): 29-33. DOI: 10.3863/j.issn.1000-2634.2004.02.009

Abstract （1795）

PDF（pc）（300KB）（747）

Save

Shallow gas formation production law is probed by taking the shallow Tertiary gas formation production as example, as well as combining the experiences of shallow gas formation production from home and abroad, to guide the production correspondingly. Gener-ally, the shallow gas formations are of smaller size, lower gas col-umn, loose pay zone and water production; in production, the reservoirs have a very shorttime inwithoutwater production and stable production, and they are easy to produce water and sands, the
production law clearly differs frommiddle-deepwhole package structure gas reservoirs. Aimed at“the three-low characteristics”(lowdaily output, lowgas production rate and lowgas recovery), quick-er water production easier well bore liquids accumulation and sands production, the principle is put forward to improve well pattern and avoid continuously stimulating gas well.

Related Articles | Metrics

Select

ACCELERATED PRESSURE CONDITION ANALYSIS,CONDUCTED THE ADJUSTMENT AND POTENTIAL DIG-GING OF ULTRA-HIGH WATER PERIOD RESERVOIR

LI Guang-quan CUI Hong-xia YIN Wen-jun et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 34-37. DOI: 10.3863/j.issn.1000-2634.2004.02.010

Abstract （776）

PDF（pc）（332KB）（733）

Save

Shengtuo oilfield have expoited more than 30 years, the anisotropism of interlayer and innerlayer is very serious and the ad-justment and potential’s digging is very difficult. The potential area of the anisotropic reservoir often distributed in the low-pressure-lev-el-layer, analysis the potential area of reservoir from the pressure is a new attempt. Based on the analysis of pressure condition of unit 83-5 in second zone of shengtuo oilfield, conductthe adjustment and potential’s digging ofUltra-highwater period reservoir, sum up sev-eral conclusion and suggestions, these conclusion and suggestions
have taken good effect on the practice of exploitation of Ultra-high water period reservoir. This article has reference value of the ex-ploitation of Ultra-high water period reservoir.

Related Articles | Metrics

Select

WELL TEST ANALYSIS OF SLUG FLOW IN COMPOSITE RESERVOIRS OF LOW-VELOCITY NON-DARCY FLUID FLOW

JANG Wei-jun JIA Yong-lu LIU Chang-yin et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 38-41. DOI: 10.3863/j.issn.1000-2634.2004.02.011

Abstract （884）

PDF（pc）（333KB）（837）

Save

Based on the low-velocity non-darcy fluid flowtheory in porou media of Non-Open flowwells in composite reservoirs, the effective wellbore radial model of this kind ofwell testwas derived, the solution of this model was gotten in Laplace space with Laplace transfor mation and special physical equations theory, then the real space solution was gotten by convenient Stehfest’s numerical Laplace revers transformation. The new type curve of the model was also obtained.The model described in this paper can be used for slug well tes
analysis in low permeability reservoirs.

Related Articles | Metrics

Select

RESEARCH PROGRESS OF CO2CORROSION IN OIL/GAS FIELD EXPLOITATION

LI Chun-fu WANG Bin ZHANG Ying et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 42-46. DOI: 10.3863/j.issn.1000-2634.2004.02.012

Abstract （1590）

PDF（pc）（305KB）（982）

Save

This paper summarized the existing forms and influencing fac-
tors of CO2corrosion in oil/gas field exploitation. The mechanism of
different corrosions was also analyzed. A viewpoint of supercritical
corrosion toward the characters and corrosion facts of CO2in the su-
percritical condition was presented in the paper.

Related Articles | Metrics

Select

A NEW METHOD ON ANALYZING THE STABILITY OFFOAM DRILLING FLUIDS

LI Xiao-ming PU Xiao-lin LUO Xing-shu et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 47-49. DOI: 10.3863/j.issn.1000-2634.2004.02.013

Abstract （1660）

PDF（pc）（245KB）（786）

Save

The most important factor for evaluating the capability of foam drilling mud is the foam stability, that is the foam half-life. Currently the most common method used to determine the foam half-life is the conventional measuring cylinder method which is simple and convenient. However, the disadvantages are artificial errors and it can not be recorded the foam decay process. To overcome such a limitation, a newmethod has been used to evaluate the foam stability. An apparatuswhich is calledMA-2000 Turbi Scan has been used
to analyze the foam stability. The measurement is more advanced and accurate and is controlled by a computer operating automatically. The analyzing results are two curves exported by computer. From the curves we can observe clearly the foam decay process and numerate the foam half-life.

Related Articles | Metrics

Select

STUDY ON ACID LEAK-OFF IN NATURALLY-FRAC-TURED RESERVOIRS

LI Yong-ming Guo Jian-chun ZHAO Jing-zhou et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 50-53. DOI: 10.3863/j.issn.1000-2634.2004.02.014

Abstract （747）

PDF（pc）（363KB）（884）

Save

When acid fluids flow in artificial fractures, some larger pores or natural fractures are dissolved by acid to enlarge into wormholes so that acid mainly leaks through wormholes. Therefore, it must be considered the effects of acidizingwormholes on acid leak-off in naturally-fractured reservoirs. Based on the characteristics of acid flowing in naturally-fractured reservoirs, the model of acidizingwormhole growth, the model of acid flowing and reaction inwormholes and the model of acid flowing in the matrix are developed. The computing
method of acid leak-offwith the effects of acidizingwormholes is put forward. The effects of net fracture pressure, wormhole population and acid viscosity to wormhole growth and acid leak-off are studied by case calculation that has important meanings for controlling the leak-off of acid fracturing

Related Articles | Metrics

Select

SYNTHESIS AND SCALE INHIBITION PROPERTY OF ACRYLIC ACID AND SODIUM ALLYL SULFONATE COPOLYMER

WU Yan YANG Xu.

西南石油大学学报(自然科学版) 2004, 26 (2): 54-56. DOI: 10.3863/j.issn.1000-2634.2004.02.015

Abstract （968）

PDF（pc）（309KB）（690）

Save

Acrylic acid (AA) and sodium allyl-sulfonate (SAS) have been used to synthesize a solid scale inhibitor. The relationships between the inhibition function and monomer ratio, initiator concentration, copolymer amount added, Ca2+concentration, temperature and time of the solution have been studied in laboratory. Results have shown that the scale inhibitor has a good effect on reducing scale of CaCO3.

Related Articles | Metrics

Select

SYNTHESIS AND PROPERTIES OF THERMOSTABLE FI TRATE LOSS REDUCER: PAX

XU Juan HUANG Jin-jun LI Chun-xia et al.

西南石油大学学报(自然科学版) 2004, 26 (2): 57-59. DOI: 10.3863/j.issn.1000-2634.2004.02.016

Abstract （945）

PDF（pc）（306KB）（903）

Save

A newstyle thermostable binary copolymer filtrate loss reducer-PAX, has been synthesized by 2-acryloyl-2-methyl-propylsulfonate (AMPS) and acryamide (AM) under a redox system. Results have been shown that PAX possesses good effect on reducing fluid loss under 220℃and saturated brine media.

Related Articles | Metrics

Volumn Content