Technology and Application of Multi-stage Acid Fracturing byWater-swelling Packer

西南石油大学学报(自然科学版) ›› 2013, Vol. 35 ›› Issue (2): 109-114.

• 石油与天然气工程 • Previous Articles Next Articles

Technology and Application of Multi-stage Acid Fracturing byWater-swelling Packer

Zhang bo1，2, Xue Chengjin1, Zhou Linbo1, Zhang Ye2，3

1. Sinopec Research Institute of Petroleum Engineering，Chaoyang，Beijing 100101，China2. School of Petroleum Engineering，China University of Petroleum，Changping，Beijing 102249，China3. Engineering and Technology Research Institute，Northwest Oilfield Company，SINOPEC，Urumqi，Xinjiang 830011，China

Received:1900-01-01 Revised:1900-01-01 Online:2013-04-01 Published:2013-04-01

Abstract

Abstract: The ordovician carbonate reservoir of one oilfield in the northwest of China，is mainly fracture cavern，with the
reservoir features of ultra-deep，high pressure and high temperature；the effect of horizontal conventional acid fracturing is
very limited，and there are still difficulties in the selection of multi-stage stimulation methods and tools. This paper introduces
the technical principle，key technical aspects，operation program and tool performance of multi-stage acid fracturing by waterswelling
packers. Based on actual drilling/mud logging/logging data and the optimized stages of multi-stage acid fracturing，
and in combination with the characteristics of reservoir fractures and solution caves，as well as the requirements of completion
tools on borehole diameter and trajectory，We determine the completion program of multi-stage acid fracturing，optimize the
RIH and inflation setting time of packers，and improve the multi-stage acid fracturing design and complete field test，under the
principle of effective stimulation and favorable reservoirs. The field test results show that the completion program of multi-stage
acid fracturing and optimized acid fracturing design are both correct，but the quality of tools like ball injection sliding sleeve
and the quality control in acid fracturing completion still need to be improved.

Key words: water-swelling packer, carbonate reservoir, horizontal well, multistage acid fracturing

Zhang bo;Xue Chengjin;Zhou Linbo;Zhang Ye;. Technology and Application of Multi-stage Acid Fracturing byWater-swelling Packer[J]. 西南石油大学学报(自然科学版), 2013, 35(2): 109-114.

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Technology and Application of Multi-stage Acid Fracturing byWater-swelling Packer

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