根据南海北部深水区储层特征及温度压力条件,对适合LS17-2-1井的测试液进行了优选。络合剂HWLH能通过分子内和分子间与水分子形成氢键,使水分子内和水分子间形成网络结构而成为络合水。以络合剂HWLH为核心处理剂配制了络合水测试液,该...根据南海北部深水区储层特征及温度压力条件,对适合LS17-2-1井的测试液进行了优选。络合剂HWLH能通过分子内和分子间与水分子形成氢键,使水分子内和水分子间形成网络结构而成为络合水。以络合剂HWLH为核心处理剂配制了络合水测试液,该络合剂能阻止测试液中的水与地层中的水相互迁移,从而保证其优良的抑制性、防水锁性及储层保护特性。室内评价结果表明,络合水测试液不仅具有较好的流变性、防水敏性、防水锁性（气-液表面张力为25.7～25.9 m N/m）、防腐性和气体水合物抑制性,与前期工作液、非储层段测试液和地层水均具有较好的配伍性,而且具有优良的储层保护性和自返排能力。络合水测试工作液在陵水17-2-1井测试作业中成功应用,证明了该体系的适应性和可行性。展开更多
An S-lay crane barge,named CNOOC 201,has been built for pipe laying in deepwater oil/gas fields in the South China Sea.It is due to be commissioned by the end of the year 2010.A special lifting system is developed to ...An S-lay crane barge,named CNOOC 201,has been built for pipe laying in deepwater oil/gas fields in the South China Sea.It is due to be commissioned by the end of the year 2010.A special lifting system is developed to meet the challenge that installing deepwater risers from an S-lay barge is difficult and has not been achieved.The purpose of this paper was to investigate the model test on such an innovative system,which has to be done before field application.By applying the similarity theory,the movement of the S-lay barge is simulated through a six degrees-of-freedom motion platform,and a truncated model riser is utilized for the model testing.The displacement and force boundary conditions at the truncated position of the riser are obtained from the catenary governing equation and become realized by a slideway cart and a loading system designed to control the configuration of the model riser,which presents a similar configuration to a real riser in deepwater.The test results are in very good agreement with theoretical calculations,showing that the active truncated test is applicable for controlling the configuration of the deepwater riser in model testing investigation.展开更多
从深水海底取得的土样要经受很大的应力释放。模拟孔隙水中溶解有不同含量气体的深水黏土取样过程 ,对Lierstranda黏土进行了一系列三轴和高压固结试验。试验结果表明 ,自重应力下的孔隙比变化与孔隙水中的气体饱和度 η 成线性增长关...从深水海底取得的土样要经受很大的应力释放。模拟孔隙水中溶解有不同含量气体的深水黏土取样过程 ,对Lierstranda黏土进行了一系列三轴和高压固结试验。试验结果表明 ,自重应力下的孔隙比变化与孔隙水中的气体饱和度 η 成线性增长关系。其它测得的土性参数 ,如不排水强度、峰值应力下的应变、剪胀系数和先期固结压力等均随着 η 有规律地变化 ,显示土样的扰动性也随着 η 的增加而增加。据此 ,本文提出了对可能含有气体的深水土样的最佳贮藏与处置方案。展开更多
文摘根据南海北部深水区储层特征及温度压力条件,对适合LS17-2-1井的测试液进行了优选。络合剂HWLH能通过分子内和分子间与水分子形成氢键,使水分子内和水分子间形成网络结构而成为络合水。以络合剂HWLH为核心处理剂配制了络合水测试液,该络合剂能阻止测试液中的水与地层中的水相互迁移,从而保证其优良的抑制性、防水锁性及储层保护特性。室内评价结果表明,络合水测试液不仅具有较好的流变性、防水敏性、防水锁性（气-液表面张力为25.7～25.9 m N/m）、防腐性和气体水合物抑制性,与前期工作液、非储层段测试液和地层水均具有较好的配伍性,而且具有优良的储层保护性和自返排能力。络合水测试工作液在陵水17-2-1井测试作业中成功应用,证明了该体系的适应性和可行性。
基金support from the National Natural Science Foundation of China (granted number 50979113)the National 863 Program of China (granted number 2006AA09A105)
文摘An S-lay crane barge,named CNOOC 201,has been built for pipe laying in deepwater oil/gas fields in the South China Sea.It is due to be commissioned by the end of the year 2010.A special lifting system is developed to meet the challenge that installing deepwater risers from an S-lay barge is difficult and has not been achieved.The purpose of this paper was to investigate the model test on such an innovative system,which has to be done before field application.By applying the similarity theory,the movement of the S-lay barge is simulated through a six degrees-of-freedom motion platform,and a truncated model riser is utilized for the model testing.The displacement and force boundary conditions at the truncated position of the riser are obtained from the catenary governing equation and become realized by a slideway cart and a loading system designed to control the configuration of the model riser,which presents a similar configuration to a real riser in deepwater.The test results are in very good agreement with theoretical calculations,showing that the active truncated test is applicable for controlling the configuration of the deepwater riser in model testing investigation.
文摘从深水海底取得的土样要经受很大的应力释放。模拟孔隙水中溶解有不同含量气体的深水黏土取样过程 ,对Lierstranda黏土进行了一系列三轴和高压固结试验。试验结果表明 ,自重应力下的孔隙比变化与孔隙水中的气体饱和度 η 成线性增长关系。其它测得的土性参数 ,如不排水强度、峰值应力下的应变、剪胀系数和先期固结压力等均随着 η 有规律地变化 ,显示土样的扰动性也随着 η 的增加而增加。据此 ,本文提出了对可能含有气体的深水土样的最佳贮藏与处置方案。
