致密气藏压裂井定向射孔优化技术

邓金根; 郭先敏; 孙焱; 戚斌; 雷炜

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致密气藏压裂井定向射孔优化技术

邓金根, 郭先敏, 孙焱, 戚斌, 雷炜

文章导航 > 石油钻采工艺 > 2008 > 30(6): 93-96

邓金根, 郭先敏, 孙焱, 戚斌, 雷炜. 致密气藏压裂井定向射孔优化技术[J]. 石油钻采工艺, 2008, 30(6): 93-96.

引用本文:

邓金根, 郭先敏, 孙焱, 戚斌, 雷炜. 致密气藏压裂井定向射孔优化技术[J]. 石油钻采工艺, 2008, 30(6): 93-96.

DENG Jingen, GUO Xianmin, SUN Yan, QI Bin, LEI Wei. Research on oriented perforation optimization technique for fracturing wells in tight gas reservoir[J]. Oil Drilling & Production Technology, 2008, 30(6): 93-96.

Citation:

DENG Jingen, GUO Xianmin, SUN Yan, QI Bin, LEI Wei. Research on oriented perforation optimization technique for fracturing wells in tight gas reservoir[J]. Oil Drilling & Production Technology, 2008, 30(6): 93-96.

致密气藏压裂井定向射孔优化技术

1.
中国石油大学，北京　102249
2.
中国石化西南油气分公司，四川德阳　618000

详细信息

中图分类号: TE357.11

Research on oriented perforation optimization technique for fracturing wells in tight gas reservoir

1.
China University of Petroleum, Beijing 102249, China
2.
Sinopec Southwest Oil &

摘要: 目前，致密气藏压裂施工普遍存在破裂压力较高的难题。为了研究和解决这一问题，针对低渗致密砂岩气藏的特点，并结合川西南致密气藏压裂井存在的实际问题，在分析了影响川西南致密气藏压裂井压裂效果的主要因素的基础上，通过室内大尺寸真三轴模拟实验系统和FLAC3D 有限差分大型岩土数值模拟软件，研究了不同射孔方式和射孔方位、孔密、孔深及孔径对裂缝延伸和破裂压力的影响规律。根据室内实验和数值模拟结果，对川西南致密气藏压裂井进行了射孔优化，形成了最大主应力方向定向射孔、13~16 孔/m 中等孔密、大孔径和深穿透的优化射孔思路。现场应用结果表明，使用该思路进行压裂施工，能有效地降低地层破裂压力和提高产能。为致密砂岩气藏压裂改造提供了新型有效的技术手段，促进了致密砂岩气藏高效压裂技术的发展。
- 致密气藏 /
- 破裂压力 /
- 真三轴实验 /
- 数值模拟 /
- 定向射孔
Abstract: Currently，fracturing in tight gas reservoir generally exists a higher fracture pressure puzzle. In order to settle thisproblem, combined the characteristic of tight gas reservoir with the practical problems existing in fractured well in southwest Sichuan,the writers analyze the key factors influencing fracturing effect. In addition, by carrying out simulation experiment on large sizeand real tri-axial equipment and using the FLAC3D finite difference numerical modeling software, we also study the effect rules ofdifferent perforation modes, azimuths, densities, depths and sizes on fracture propagation and fracture pressure. On the base of thelaboratory experiment and simulation results, we optimized the perforation method of fracturing well in tight gas reservoir of southwestSichuan and obtained a optimization thinking that oriented perforating should be in the direction of maximum principal stress withmoderate hole density of 13~16 hole/m, large size and deep penetration. The field application result indicates that fracture pressurecould be effectively reduced and the productivity be increased. Therefore, for tight gas reservoir, oriented perforating optimum designis a powerful and feasible tool to accelerate the development of effective fracturing technology.
- tight gas reservoir /
- fracture pressure /
- real tri-axial test /
- numerical simulation /
- oriented perforation

[1]

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致密气藏压裂井定向射孔优化技术

1. 中国石油大学，北京　102249

2. 中国石化西南油气分公司，四川德阳　618000

收稿日期: 2019-05-03
修回日期: 2019-05-03
刊出日期: 2009-01-21

中图分类号: TE357.11

关键词:

摘要: 目前，致密气藏压裂施工普遍存在破裂压力较高的难题。为了研究和解决这一问题，针对低渗致密砂岩气藏的特点，并结合川西南致密气藏压裂井存在的实际问题，在分析了影响川西南致密气藏压裂井压裂效果的主要因素的基础上，通过室内大尺寸真三轴模拟实验系统和FLAC3D 有限差分大型岩土数值模拟软件，研究了不同射孔方式和射孔方位、孔密、孔深及孔径对裂缝延伸和破裂压力的影响规律。根据室内实验和数值模拟结果，对川西南致密气藏压裂井进行了射孔优化，形成了最大主应力方向定向射孔、13~16 孔/m 中等孔密、大孔径和深穿透的优化射孔思路。现场应用结果表明，使用该思路进行压裂施工，能有效地降低地层破裂压力和提高产能。为致密砂岩气藏压裂改造提供了新型有效的技术手段，促进了致密砂岩气藏高效压裂技术的发展。

English Abstract

Research on oriented perforation optimization technique for fracturing wells in tight gas reservoir

1. China University of Petroleum, Beijing 102249, China

2. Sinopec Southwest Oil &

Received Date: 2019-05-03
Rev Recd Date: 2019-05-03
Publish Date: 2009-01-21

Keywords:

Abstract: Currently，fracturing in tight gas reservoir generally exists a higher fracture pressure puzzle. In order to settle thisproblem, combined the characteristic of tight gas reservoir with the practical problems existing in fractured well in southwest Sichuan,the writers analyze the key factors influencing fracturing effect. In addition, by carrying out simulation experiment on large sizeand real tri-axial equipment and using the FLAC3D finite difference numerical modeling software, we also study the effect rules ofdifferent perforation modes, azimuths, densities, depths and sizes on fracture propagation and fracture pressure. On the base of thelaboratory experiment and simulation results, we optimized the perforation method of fracturing well in tight gas reservoir of southwestSichuan and obtained a optimization thinking that oriented perforating should be in the direction of maximum principal stress withmoderate hole density of 13~16 hole/m, large size and deep penetration. The field application result indicates that fracture pressurecould be effectively reduced and the productivity be increased. Therefore, for tight gas reservoir, oriented perforating optimum designis a powerful and feasible tool to accelerate the development of effective fracturing technology.

邓金根, 郭先敏, 孙焱, 戚斌, 雷炜. 致密气藏压裂井定向射孔优化技术[J]. 石油钻采工艺, 2008, 30(6): 93-96.

引用本文:

邓金根, 郭先敏, 孙焱, 戚斌, 雷炜. 致密气藏压裂井定向射孔优化技术[J]. 石油钻采工艺, 2008, 30(6): 93-96.

Citation: