On Factors Influencing Fracture Damage in Tight Gas Reservoirs, Linxing Block

doi:10.3969/j.issn.1006-6535.2022.01.021

Abstract

Abstract: In order to identify the factors influencing the fracturing damage in tight gas reservoirs, Linxing block, laboratory experiments were performed with core permeability damage rate as an evaluation index to analyze the damage of reservoir sensitivity, water block effect, guar gum fracturing fluid residue after gel breaking and residue content to the reservoirs. The results showed that the reservoirs were moderately to weakly water-sensitive, and weakly to moderately weakly acid-sensitive and alkali-sensitive; the reservoir water block index was 85% to 100%, and the damage was strong to extremely strong; when single ammonium persulfate is used as gel breaker, the gel breaking viscosity was high at a temperature of lower than 30 ℃ and the damage to reservoirs was strong; the damage rate of fracturing fluid residue to reservoir permeability was low. The extent of damage to Linxing fractured tight gas reservoir in descending order was water block damage, fracturing fluid residue damage after gel breaking, reservoir sensitivity damage, and fracturing fluid residue damage. This study plays a guiding role in the selection of fracturing fluid systems and reservoir protection measures for Linxing tight gas reservoirs.

Key words: tight sandstone gas, guar gum fracturing fluid, reservoir damage, water block, gel breaking, Linxing Block

CLC Number:

TE357

Yu Cuipei, Zhang Binhai, Li Zihan, Huang Jing, Dong Zibiao, Yue Qiansheng. On Factors Influencing Fracture Damage in Tight Gas Reservoirs, Linxing Block[J]. Special Oil & Gas Reservoirs, 2022, 29(1): 141-146.

References

[1] 王成.大庆长垣以东地区深层致密气储层成岩胶结作用及其对物性影响[J].大庆石油地质与开发,2019,38(4):143-151.
WANG Cheng.Diagenesis and cementation of the deep tight gas reservoir and their influences on the physical properties in East Daqing Placanticline[J].Petroleum Geology & Oilfield Development in Daqing,2019,38(4):143-151.
[2] 吴百烈,周建良,曹砚锋,等.致密气水平井分段多簇压裂关键参数优选[J].特种油气藏,2016,23(4):127-130,157.
WU Bailie,ZHOU Jianliang,CAO Yanfeng,et al.Key parameter optimization of horizontal well multi-stage multi-cluster fracturing in tight gas reservoir[J].Special Oil & Gas Reservoirs,2016,23(4):127-130,157.
[3] 张大智,初丽兰,周翔,等.松辽盆地北部徐家围子断陷沙河子组致密气储层成岩作用与成岩相特征[J].吉林大学学报(地球科学版),2021,51(1):22-34.
ZHANG Dazhi,CHU Lilan,ZHOU Xiang,et al.Diagenesis and diagenesis facies of tight gas reservoir of Shahezi Formation,in Xujiaweizi Fault Depression of North Songliao Basin[J].Journal of Jilin University (Earth Science Edition),2021,51 (1):22-34.
[4] 贾佳,冯雷,夏忠跃,等.临兴中区块致密气储层伤害及保护研究[J].新疆石油天然气,2021,17(1):25-28,33.
JIA Jia,FENG Lei,XIA Zhongyue,et al.Research on tight gas reservoir damage and protection in Linxing Middle Block[J].Xinjiang Oil & Gas,2021,17(1):25-28,33.
[5] 刘朋志,郭和坤,张新旺,等.致密气储层水敏水锁伤害机理实验研究[J].科技通报,2019,35(8):103-108.
LIU Pengzhi,GUO Hekun,ZHANG Xinwang,et al.Experimental study on mechanism of water sensitivity and water lock damage in tight gas reservoir[J].Bulletin of Science and Technology,2019,35(8):103-108.
[6] 赵春鹏,李文华,张益,等.低渗气藏水锁伤害机理与防治措施分析[J].断块油气田,2004,4(3):45-46,91.
ZHAO Chunpeng,LI Wenhua,ZHANG Yi,et al.Damage mechanism and prevention methods analysis of low permeability gas reservoir water blocking[J].Fault-Block Oil & Gas Field,2004,4(3):45-46,91.
[7] 江昀,杨贤友,李越,等.大北-克深区块致密砂岩气藏水锁伤害防治[J].深圳大学学报(理工版),2017,34(6):640-646.
JIANG Yun,YANG Xianyou,LI Yue,et al.Solutions for water block damage of tight gas reservoirs in Dabei-Keshen Area[J].Journal of Shenzhen University(Science & Engineering),2017,34(6):640-646.
[8] 梁天博,马实英,魏东亚,等.低渗透油藏水锁机理与助排表面活性剂的优选原则[J].石油学报,2020,41(6):745-752.
LIANG Tianbo,MA Shiying,WEI Dongya,et al.Water blocking mechanism of low-permeability reservoirs and screening principle of flowback surfactants[J].Acta Petrolei Sinica,2020,41(6):745-752.
[9] 安志杰.塔里木油田“三高”致密砂岩气藏防/解水锁技术[J].石油钻采工艺,2019,41(6):763-767.
AN Zhijie.Water lock prevention/removal technology used in the “three-high” tight sandstone gas reservoirs of the Tarim Oilfield[J].Petroleum Drilling & Production Technology,2019,41(6):763-767.
[10] 郑仰峰,翟成,倪冠华.基于表面活性剂解除水锁效应的压裂液性能研究[J].煤矿安全,2019,50(11):1-5.
ZHENG Yangfeng,ZHAI Cheng,NI Guanhua.Study on performance of fracturing fluid based on surfactant releasing water locking effect[J].Safety in Coal Mines,2019,50(11):1-5.
[11] 李建山,陆红军,王平,等.生物酶破胶剂在气井压裂中的研究与应用[J].钻井液与完井液,2012,29(6):71-73,91.
LI Jianshan,LU Hongjun,WANG Ping,et al.Research and application on enzyme breaker of fracturing in gas well[J].Drilling Fluids & Completion Fluids,2012,29(6):71-73,91.
[12] 王满学.低残渣硼交联液体瓜胶压裂液LGC性能研究与应用[J].钻井液与完井液,2004,21(4):92-94.
WANG Manxue.A borate crosslinking gel concentrate fracturing fluid with low residue[J].Drilling Fluid & Completion Fluid,2004,21(4):92-94.
[13] 胥向明.低残渣羧甲基压裂液在苏里格气田的应用[J].石油天然气学报,2013,35(8):107-110.
XU Xiangming.The application of low residual carboxymethyl fracturing fluid in Sulige Gas Field[J].Journal of Oil and Gas Technology,2013,35(8):107-110.
[14] 龙增伟,杨振周,陈凯,等.吉林两井地区低残渣缔合压裂液的研究与应用[J].钻井液与完井液,2009,26(3):56-58.
LONG Zengwei,YANG Zhenzhou,CHEN Kai,et al.The study and application of a Low Residue Associated Fracturing Fluid in Liangjing Area in Jilin Oilfield[J].Drilling Fluid & Completion Fluid,2009,26(3):56-58.
[15] 张洁,罗平亚,朱建峰,等.HPG胶水基压裂液残渣的伤害与溶解[J],西南石油学院学报,2001,23(4):44-45.
ZHANG Jie,LUO Pingya,ZHU Jianfeng,et al.Damage and removal of the residue of HPG gum water base fracturing fluids[J],Journal of Southwestern Petroleum Institute,2001,23(4):44-45.
[16] 王丽伟,蒙传幼,崔明月,等.压裂液残渣及支撑剂嵌入对裂缝伤害的影响[J].钻井液与完井液,2007, 24(5):59-61.
WANG Liwei,MENG Chuanyou,CUI Mingyue,et al.Effects of fracturing fluid residues and proppant embedment on the fracture impairment[J].Drilling Fluid & Completion Fluid,2007,24(5):59-61.
[17] 王中学,秦升益,张士诚.压裂液残渣对不同支撑剂导流能力的影响[J],钻采工艺,2017,40(1):56-60.
WANG Zhongxue,QIN Shengyi,ZHANG Shicheng.Impact of fracture fluid residue on fracture conductivity propped by different proppants[J],Drilling & Production Technology,2017,40(1):56-60.
[18] WANG Lei. Experimental research on damage to fracture conductivity caused by fracturing fluid residues[J].Advanced Materials Research,2013,774:303-307.
[19] 张永平,唐鹏飞,张浩,等.中基性火山岩体积压裂水平井增产预测图版及其应用[J].大庆石油地质与开发,2021,40(2):66-73.
ZHANG Yongping,TANG Pengfei,ZHANG Hao,et al.Predicting chart and its case study for volume fractured horizontal well in the intermediate-basic volcanic reservoirs[J].Petroleum Geology & Oilfield Development in Daqing,2021,40(2):66-73.
[20] 苏映宏,吴忠维,崔传智,等.水力压裂支撑裂缝导流能力计算与分析[J].大庆石油地质与开发,2021,40(6):62-71.
SU Yinghong,WU Zhongwei,CUI Chuanzhi,et al.Calculation and analysis of the propped fracture conductivity created by hydraulic fracturing[J].Petroleum Geology & Oilfield Development in Daqing,2021,40(6):62-71.
[21] 魏巍.基于双射软集合理论的压裂井层评价研究[J].石油地质与工程,2021,35(6):77-80.
WEI Wei.Research on fracture zone evaluation based on the bijective soft set theory[J].Petroleum Geology & Engineering, 2021, 35(6): 77-80.
[22] 尹虎,董满仓,李旭,等.致密油藏水平井前置增能体积压裂高效开发技术研究及应用[J].石油地质与工程,2021,35(3):97-100.
YIN Hu,DONG Mancang,LI Xu,et al. Research and application of high efficiency development technology of pre energizing volume fracturing for horizontal wells in tight reservoirs[J]. Petroleum Geology & Engineering,2021,35(3):97-100.