Plugging Mechanism and Plugging Removal Technology for Unconsolidated Sandstone Gas Reservoirs in Sebei Gas Field

doi:10.7657/XJPG20230114

Abstract

Abstract:

The Sebei gas field，a major natural gas producing area in the Qaidam basin，is characterized by multiple layers，easy sand production，and gas reservoirs with edge water. With the progress of the gas field development，reservoir plugging due to the factors such as water blocking damage，clay mineral hydration swelling and migration，and increased volume of the fluid entering wellbore occurs frequently in gas wells，which seriously affects well productivity. In the Sebei gas field，the unconsolidated sandstone gas reservoirs have high shale content and are suffering intensified water production. Through simulation experiment，it is determined that the influencing factor of reservoir plugging is clay mineral content. In order to protect the reservoirs，by selecting proper and economical plugging removal fluids，a chemical plugging removal technology has been developed for unconsolidated sandstone gas reservoirs in the Sebei gas field. Field application shows that this plugging removal technology is featured with fast operation，high efficiency and long validity，showing a good performance and application prospect.

Key words: Qaidam basin, Sebei gas field, unconsolidated sandstone gas reservoir, reservoir, plugging mechanism, chemical plugging removal, influencing factor, effective rate

CLC Number:

TE348

LIAO Li, OU Baoming, CHEN Jun, WU Cheng, JIANG Qi, NI Yong, ZHAO Yu. Plugging Mechanism and Plugging Removal Technology for Unconsolidated Sandstone Gas Reservoirs in Sebei Gas Field[J]. Xinjiang Petroleum Geology, 2023, 44(1): 100-104.

Figures/Tables 7

Fig. 1.

Fig. 2.

Fig. 3.

Table 1.

Table 2.

Table 3.

Table 4.

References 27

[1]	马力宁, 王小鲁, 朱玉洁, 等. 柴达木盆地天然气开发技术进展[J]. 天然气工业, 2007, 27(2):77-80.
	MA Lining, WANG Xiaolu, ZHU Yujie, et al. Introduction of technology improvement on natural gas development in the Qaidam basin[J]. Natural Gas Industry, 2007, 27(2):77-80.
[2]	宗贻平, 李永, 尉亚民, 等. 涩北气田第四系疏松砂岩气藏有效开发工艺技术研究及应用[J]. 天然气地球科学, 2010, 21(3):357-361.
	ZONG Yiping, LI Yong, WEI Yamin, et al. Research and application of production techniques for Quaternary loose sand reservoirs in Sebei gas field[J]. Natural Gas Geoscience, 2010, 21(3):357-361.
[3]	饶鹏, 冯胜利, 谷晓峰, 等. 青海涩北气田第四系疏松粉细砂岩气藏防砂工艺试验研究与评价[J]. 天然气地球科学, 2006, 17(2):196-200.
	RAO Peng, FENG Shengli, GU Xiaofeng, et al. The research and evaluation of sand-control methods for the Quaternary unconsolidated siltstone gas reservior in SGF,Qinghai[J]. Natural Gas Geoscience, 2006, 17(2):196-200.
[4]	李跃林, 梁玉凯, 郑华安. 水侵伤害储层复合解堵工艺[J]. 特种油气藏, 2016, 23(5):138-140.
	LI Yuelin, LIANG Yukai, ZHENG Huaan. Composite deplugging technology in the reservoir with water invasion damage[J]. Special Oil & Gas Reservoirs, 2016, 23(5):138-140.
[5]	孙虎法, 王小鲁, 成艳春, 等. 水源识别技术在涩北气田气井出水中的应用[J]. 天然气工业, 2009, 29(7):76-78.
	SUN Hufa, WANG Xiaolu, CHENG Yanchun, et al. The application of water source identification to control water breakthrough in gas wells of the Sebei gas field[J]. Natural Gas Industry, 2009, 29(7):76-78.
[6]	赵哲军, 李莎莎, 赵华, 等. 气井生产过程中水锁伤害机理研究[J]. 天然气技术与经济, 2015, 9(3):33-36. doi: 10.3969/j.issn.2095-1132.2015.03.009
	ZHAO Zhejun, LI Shasha, ZHAO Hua, et al. Mechanism of water-blocking damage during production of gas wells[J]. Natural Gas Technology and Economy, 2015, 9(3):33-36.
[7]	孟向丽, 赵立强, 徐昆, 等. 注聚合物井堵塞原因和解堵技术[J]. 石油钻采工艺, 2011, 33(3):70-73.
	MENG Xiangli, ZHAO Liqiang, XU Kun, et al. Reason analysis on plugging in polymeric damaged well and the technology of broken down[J]. Oil Drilling & Production Technology, 2011, 33(3):70-73.
[8]	刘海庆, 姚传进, 蒋宝云, 等. 低渗高凝油藏堵塞机理及解堵增产技术研究[J]. 特种油气藏, 2010, 17(6):103-106.
	LIU Haiqing, YAO Chuanjin, JIANG Baoyun, et al. Study on plugging mechanism and plugging removal technique for low permeability and high pour point reservoir[J]. Special Oil & Gas Reservoirs, 2010, 17(6):103-106.
[9]	冯胜利, 尉亚民, 邵文斌, 等. 柴达木盆地第四系疏松砂岩气藏防砂技术的研究与应用[J]. 钻采工艺, 2008, 31(增刊):28-30.
	FENG Shengli, WEI Yamin, SHAO Wenbin, et al. Research and application of the sand control technologies for the unconsolidated sandstone gas reservoir in Qaidam basin[J]. Drilling & Production Technology, 2008,31 (Supp.):28-30.
[10]	谢一婷, 陈朝晖. 疏松砂岩气藏渗透率敏感性实验研究[J]. 断块油气田, 2013, 20(4):488-491.
	XIE Yiting, CHEN Zhaohui. Experiment study on permeability sensitivity in loose sandstone gas reservoir[J]. Fault-Block Oil & Gas Field, 2013, 20(4):488-491.
[11]	林光荣, 邵创国, 徐振锋, 等. 低渗气藏水锁伤害及解除方法研究[J]. 石油勘探与开发, 2003, 30(6):117-118.
	LIN Guangrong, SHAO Chuangguo, XU Zhenfeng, et al. Water-blocking damage and its solution in low permeability gas reservoirs[J]. Petroleum Exploration and Development, 2003, 30(6):117-118.
[12]	段志强, 夏辉, 王龙, 等. 鄂尔多斯盆地庆阳气田山1段储集层特征及控制因素[J]. 新疆石油地质, 2022, 43(3):285-293.
	DUAN Zhiqiang, XIA Hui, WANG Long, et al. Reservoir characteristics and controlling factors of Shan 1 member in Qingyang gas field,Ordos basin[J]. Xinjiang Petroleum Geology, 2022, 43(3):285-293.
[13]	白晓飞, 周博, 董长银, 等. 哈拉哈塘油田奥陶系碳酸盐岩油藏储集层泥砂产出机理[J]. 新疆石油地质, 2022, 43(4):456-462.
	BAI Xiaofei, ZHOU Bo, DONG Changyin, et al. Production mechanism of mud and sand in Ordovician carbonate reservoirs in Halahatang oilfield,Tarim basin[J]. Xinjiang Petroleum Geology, 2022, 43(4):456-462.
[14]	陈世杰, 孙雷, 潘毅, 等. 潜山油藏微球-天然气驱实验评价[J]. 新疆石油地质, 2022, 43(4):468-473.
	CHEN Shijie, SUN Lei, PAN Yi, et al. Experimental evaluation on microsphere-natural gas flooding in buried-hill reservoirs[J]. Xinjiang Petroleum Geology, 2022, 43(4):468-473.
[15]	杨永利. 低渗透油藏水锁伤害机理及解水锁实验研究[J]. 西南石油大学学报(自然科学版), 2013, 35(3):137-141.
	YANG Yongli. Study of water locking damage mechanism and water unlocking of low permeability reservoir[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2013, 35(3):137-141.
[16]	贺承祖, 胡文才. 浅谈水锁效应与储层伤害[J]. 天然气工业, 1994, 14(6):36-38.
	HE Chengzu, HU Wencai. Elementary lecture on water lock effect and reservoir damage[J]. Natural Gas Industry, 1994, 14(6):36-38.
[17]	张绍槐, 蒲春生, 李琪. 储层伤害的机理研究[J]. 石油学报, 1994, 15(4):58-64. doi: 10.7623/syxb199404008
	ZHANG Shaohuai, PU Chunsheng, LI Qi. Study on the mechanism of formation damage[J]. Acta Petrolei Sinica, 1994, 15(4):58-64. doi: 10.7623/syxb199404008
[18]	周晋冲, 张彬, 雷征东, 等. 低渗透油藏不稳定注水岩心实验及增油机理[J]. 新疆石油地质, 2022, 43(4):491-495.
	ZHOU Jinchong, ZHANG Bin, LEI Zhengdong, et al. Core experiment and stimulation mechanism of unstable waterflooding in low permeability reservoirs[J]. Xinjiang Petroleum Geology, 2022, 43(4):491-495.
[19]	宋雨纯, 黄昊, 周创飞, 等. 姬塬油田麻黄山地区长4+5和长6储集层敏感性差异评价[J]. 新疆石油地质, 2022, 43(5):546-553.
	SONG Yuchun, HUANG Hao, ZHOU Chuangfei, et al. Evaluation on sensitivity difference between Chang 4+5 and Chang 6 reservoirs in Mahuangshan area of Jiyuan oilfield[J]. Xinjiang Petroleum Geology, 2022, 43(5):546-553.
[20]	高占胜, 杨波, 刘己胜. 大佛寺井田煤层气储层伤害及其原因分析[J]. 资源与产业, 2018, 20(4):47-51. doi: 10.13776/j.cnki.resourcesindustries.20180727.003
	GAO Zhansheng, YANG Bo, LIU Jisheng. CBM reservior damage and reasons of Dafosi well field[J]. Resources & Industries, 2018, 20(4):47-51.
[21]	杨付林, 邓建华, 薛芸. SYJ-1型聚合物复合解堵剂的研制及性能评价[J]. 复杂油气藏, 2010, 3(3):77-80.
	YANG Fulin, DENG Jianhua, XUE Yun. Development and performance evaluation of composite polymer plug remover SYJ-1[J]. Complex Hydrocarbon Reservoirs, 2010, 3(3):77-80.
[22]	苏崇华. 疏松砂岩储层伤害机理及应用:以HND-1/2为例[D]. 成都: 西南石油大学, 2011.
	SU Chonghua. Loose sand reservoir damage mechanism and its application to HND-1/2 oilfields[D]. Chengdu: Southwest Petroleum University, 2011.
[23]	周伟, 沈秀伦, 寇根, 等. 准噶尔盆地玛南地区上乌尔禾组储集层伤害机理[J]. 新疆石油地质, 2022, 43(1):107-114.
	ZHOU Wei, SHEN Xiulun, KOU Gen, et al. Reservoir damage mechanism for upper Wuerhe formation in southern Mahu area,Junggar basin[J]. Xinjiang Pertoleum Geology, 2022, 43(1):107-114.
[24]	王剑, 马聪, 罗正江, 等. 准噶尔盆地阜东斜坡韭菜园子组储集层特征及敏感性[J]. 新疆石油地质, 2021, 42(1):38-45.
	WANG Jian, MA Cong, LUO Zhengjiang, et al. Characteristics and reservoir sensitivity of Jiucaiyuanzi formation in Fudong slope,Junggar basin[J]. Xinjiang Pertoleum Geology, 2021, 42(1):38-45.
[25]	方俊伟, 董晓强, 李雄, 等. 顺北油田断溶体储集层特征及损害预防[J]. 新疆石油地质, 2021, 42(2):201-205.
	FANG Junwei, DONG Xiaoqiang, LI Xiong, et al. Characteristics and damage prevention of fault-karst reservoirs in Shunbei oilfield[J]. Xinjiang Pertoleum Geology, 2021, 42(2):201-205.
[26]	李柏鹏, 刘洋, 高旺斌, 等. 气井近井地带储层伤害计算及解堵工艺应用[J]. 石油化工应用, 2015, 34(10):41-44.
	LI Baipeng, LIU Yang, GAO Wangbin, et al. Near wellbore zone of gas well reservoir damage calculation and application of removing reservoir blockage[J]. Petrochemical Industry Application, 2015, 34(10):41-44.
[27]	江健. 川西致密气藏生产后期解除水锁工艺技术[J]. 钻井液与完井液, 2012, 29(3):64-66.
	JIANG Jian. Study on technology of breaking water block in later stage of gas reservoirs production in west Sichuan[J]. Drilling Fluid & Completion Fluid, 2012, 29(3):64-66.