西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (3): 134-137.DOI: 10.3863/j.issn.1674-5086.2009.03.031

• 油气化学工程与化工 • Previous Articles     Next Articles

EXPERIMENTAL RESEARCH ON THE ACTIVITY AND INHIBITATION OF SEVERAL TYPES OF ORGANIC SALT SOLUTION

LI Fang1 PU Xiao-lin1 LUO Xing-shu1 LI Chun-xia1 XING Jin-sheng2

  

  1. 1.Petroleum Engineering Institute，Southwest Petroleum University，Chengdu Sichuan 610500，China；2.Oil and Gas Reservoir Evaluation Department of PetroChina Dagang Oilfield，Dagang Tianjin 300280,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-06-20 Published:2009-06-20

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Abstract:

Wellbore Wellbore instability happens commonly in shale,salt rocks,noncementated sandstone or other fractured strata,it is most common and serious in shale.Shale hydration is an important factor for the instability of wellbore.The extent of hydration in aqueous solution of shale lies on the activity of aqueous solution.So,it is important to prevent shale wellbore instability by analyzing relationship between the activity and shale hydration swelling.Authors of this paper measure the activity of Weigh2,Weigh3,YJS-1,YJS-2,KCOOH,NaCOOH,NaCl,KCl,and CaCl2 by adsorption isotherm.The capability of restraining swelling and restraining dispersion is determined.The relation between the activity between salt solution and inhabitation is analyzed.The results show that it can meet the requirement of wellbore stability to control shale hydration by adjusting different salt and salt concentration in drilling fluid.

Key words: organic salt, activity, swelling capability, recovery, inhabitation

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