陵水17-2气田深水测试液类型选择

段泽辉; 李蔚萍; 孟文波; 李祝军; 张崇; 胡伊旭

doi:10.3969/j.issn.1001-5620.2015.06.010

陵水17-2气田深水测试液类型选择

doi: 10.3969/j.issn.1001-5620.2015.06.010

1.
中海石油南海西部(海南)公司, 海南海口
2. 湖北汉科新技术股份有限公司, 湖北荆州
3. 中海石油(中国)有限公司湛江分公司, 广东湛江

基金项目: 中国海洋石油有限公司项目(CCL2014ZJFN0429)。

详细信息

作者简介:
段泽辉,高级工程师,1996年毕业于西南石油大学,现在中海石油南海西部(海南)公司从事钻井完井液科研和管理工作。地址:海南省海口市滨海大道华信路4号中海石油南海西部(海南)公司;邮政编码570105;E-mail:duanzh@cnooc.com.cn。

通讯作者:
李蔚萍,电话(0716)8329792

中图分类号: TE254.4
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出版历程
- 收稿日期: 2015-08-09
- 刊出日期: 2015-11-30

Analysis of Causes of Reservoir Damage in Lingshui 17-2 Gas Field and Selection of Test Fluid for Reservoir Protectionin Deep Water Area

NO. 39 Yuedi Lu, Kaifa District, Jingzhou City, Hubei 434000, China

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Corresponding author: 李蔚萍,电话(0716)8329792

摘要

摘要: 南海北部深水区陵水17-2气田储层地层压力系数1.19~1.21、孔隙度平均值为31.5%,渗透率平均值为633×10^-3 μm²,储层孔渗关系好;黏土含量为16.1%,具有盐敏、水敏等特点。对该气田测试液类型进行了优选:氯化钙海水溶液、甲酸钾海水溶液和100%络合水3种基液均能满足密度在1.28~1.30 g/cm³内可调的要求;均具有较好的抑制性,防膨率均在95%左右;3种基液抑制气体水合物生成的浓度低限为28.06%氯化钙、51.05%甲酸钾和72.00%有机醇,因此甲酸钾基液抑制气体水合物生成的能力不足;氯化钙基液矿化度高,具有盐敏潜在损害;络合水自身具有较好的防水锁性,表面张力约为25 mN/m,而氯化钙和甲酸钾基液的表面张力较大。最终优选100%的络合水作测试液基液。其在陵水17-2-1井进行了应用,测试后产量为160×104 m³/d,表皮系数为0.2,储层保护效果好。
- 深水测试液 /
- 防止地层损害 /
- 盐敏 /
- 水敏 /
- 陵水17-2气田
Abstract: Lingshui 17-2 gas field in the deep water area in South China Sea has reservoir formations that are controlled by these parameters:formation pressure coefficient 1.19, average porosity 31.5%, range of permeability 0.08×10³ μm²-2.512×10³ μm², averaged at 633×10³ μm², and clay content 16.1%.The porosity has regular relation with permeability, and the clay is sensitive to salt contamination and water flow.When transfer an exploration well to a production well, the test fluid to be used shall satisfy these needs such as balancing the formation pressures, inhibiting the generation of gas hydrates, and protecting reservoirs.A test fluid formulated with "aquo complex" was used in the gas field, giving gas production of 1.60×10⁶ m³/d, and skin factor as low as 0.2.
- Lingshui 17-2 gas field /
- Salt sensitive /
- Test fluid for wells in deep water area /
- Reservoir protection /

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参考文献(8)

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