织金工区煤层气水平井压裂砂堵分析与应对措施

Reservoir Evaluation and Development ›› 2019, Vol. 9 ›› Issue (2): 80-82.

• Non-conventional Reservoir • Previous Articles

Analysis of sand plug and measures of fracturing of CBM horizontal wells

Zhu He

Engineering and Technology Company, East China Petroleum Engineering Co., LTD., SINOPEC, Yangzhou, Jiangsu 225000, China

Received:2018-10-11 Online:2019-05-07 Published:2019-04-26

Abstract

Abstract:

Sublevel fracturing with sand of horizontal wells is an important method for the development of CBM. Combined with the fracturing construction examples in Zhijin district, we analyzed the reasons of the sand plug in fracturing and proposed the corresponding measures, thereby, to improve the success rate of the construction and achieve the purpose of reducing the cost and increasing the efficiency. It provided technical guarantee for the development of CBM wells in Zhijin area.

Key words: CBM, fracturing of horizontal well, sand plug

CLC Number:

TE357

He Zhu. Analysis of sand plug and measures of fracturing of CBM horizontal wells[J]. Reservoir Evaluation and Development, 2019, 9(2): 80-82.

参数	值
压裂层位	煤层23#
射孔井段/m	1 450~1 453
压裂方式	桥塞分段压裂
井别	开发井
桥塞深度/m	1 483
套管直径/mm	Φ139.7×7.72×N80
井口规格	700型
20/40石英砂/m³	51.8
总砂量/m³	51.8
平均砂比,%	7.29
砂液比,%	8.18
设计砂量/m³	70
加砂完成率,%	74
液量总计/m³	710.3
最高砂比,%	18
携砂液/m³	633.1
顶替液/m³	72.2
施工排量/（m³·min^-1）	8~8.5
施工压力/MPa	16.1~33.1
开井压力/MPa	9.7
破裂压力/MPa	30.1
停泵压力/MPa	10.4

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Analysis of sand plug and measures of fracturing of CBM horizontal wells

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