大牛地气田盒1储层长水平段压裂工艺技术研究与应用

Long horizontal well fracturing technology and application for He 1 layer, Daniudi Gas Field

 秦钰铭

 Qin Yuming

 中石化石油工程技术服务股份有限公司，北京 100020

 SINOPEC Oilfield Service Corporation, Beijing 100020, China

 鄂尔多斯盆地大牛地气田属于特低渗致密砂岩气藏，水平井多级分段压裂技术是开发此类低渗油气藏的重要技术，而如何设计优化长水平段的裂缝参数和施工参数，是进一步提高压后效果的关键。根据大牛地气田盒1储层特点，以压后累计产气量为目标，以气藏数值模拟、裂缝模拟为技术手段，研究了长水平段水平井多段裂缝压后产量的影响因素，如裂缝条数、裂缝间距、裂缝半长、裂缝导流能力、前置液加量、平均砂比、加砂规模等。通过现场试验与评价，形成了盒1储层长水平段水平井多段压裂设计优化技术，为大牛地气田下一步水平井分段压裂多段裂缝优化提供了依据。

 Gas reservoirs in Daniudi Gas Field, Erdos Basin have the characteristics of low permeability and tight sandstone, long horizontal multi-stage fracturing technology is an important technology to develop such low permeability oil and gas reservoirs. How to optimize the long horizontal section setting and fracture parameters is the key to improve the fracturing effect. On the basis of He 1 layer characteristics, take the cumulative gas production as the goal, use gas reservoir numerical simulation and fracture simulation technology, the effect of factors of multi-stage horizontal well fracturing such as fracture number, fracture spacing, fracture half length, fracture conductivity, pad fluid ratio, average sand ratio and sand amount on output is studied. The field tests and evaluation ensure the optimization of long horizontal well multi-stage fracturing technology, which provides a basis for the development in Daniudi Gas Field.

10.6056/dkyqt201505028