苏里格气田上古地层裸眼完井可行性研究
Feasibility Study on Open Hole Completion in Ancient Strata of Sulige Gas Field
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- 引用格式:
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张益,佟晓华,李慧,石海霞.苏里格气田上古地层裸眼完井可行性研究[J].天然气与石油,2011,29(4):0.doi:
.Feasibility Study on Open Hole Completion in Ancient Strata of Sulige Gas Field[J].Natural Gas and Oil,2011,29(4):0.doi:
- DOI:
- 作者:
- 张 益1 佟晓华2 李 慧2 石海霞2
- 作者单位:
- 1.西安石油大学石油工程学院，2.长庆油田公司
- 关键词:
- 苏里格气田；裸眼完井；井壁稳定；Lade准则
Sulige Gas Field；Open hole completion；Well sidewall stability；Lade criteria
- 摘要:
- 为了加速开发丰富的油气资源，结合低渗透气田低渗、低压特点，可采用水平井等技术开发。为了降低成本，提高单井产量需要储层段开展裸眼完井技术可行性研究，为裸眼完井与压裂增产提供技术支撑。利用摩尔-库仑准则、Drucker-Prager准则和Lade准则对苏里格气田苏4、苏6气井上古地层裸眼完井时井壁稳定性进行了预测。结果表明：苏里格气田上古地层气井井壁稳定性较好，可进行储层段的裸眼完井。但对于上部非储层段受水化后稳定性变差的影响，不能全井眼裸眼完井，需用套管封堵储层之上的地层，确保上部地层良好封隔，套管无损坏。
In order to speed up development of rich oil and gas resources and enhance single well output as far as possible，it is necessary to make full use of horizontal well development technology，conduct feasibility study on open hole completion technology in combination with characteristics of low permeability and low pressure in low permeability gas field and provide technical support for open hole completion and fracturing production increase. Adopted are Mohr?鄄Coulomb criterion，Drucker?鄄Prager criteria and Lade criteria to predict well sidewall stability of Sue well 4 and 6 in ancient strata of Sulige Gas Field during open hole completion. The results show that gas well sidewall stability of ancient strata in Sulige Gas Field is good and open hole completion is feasible in gas reservoir section. However，gas well sidewall stability of reservoir well interval in the upper section becomes poor due to hydration and open hole completion of full hole is not feasible and casing pipes are needed to block the strata above the reservoir stratum to ensure that the upper strata is blocked and separated well and casing pipes are not damaged.
