公开(公告)号：US20160060501A1

公开(公告)日：2016-03-03

申请号：US14936836

申请日：2015-11-10

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Slaheddine Kefi ,  Jesse C. Lee ,  Chrystel Brunet-Cambus ,  Nikhil Shindgikar

IPC: C09K8/32 ,  E21B21/00

CPC classification number: C09K8/32 ,  C09K8/502 ,  C09K8/516 ,  C09K2208/08 ,  E21B21/003

Abstract: Method for controlling lost circulation in a subterranean well using oil-dispersible lost-circulation materials which comprise fibers that are coated (or sized) with a lipophilic coupling agent, a lipophilic film-forming polymer or both. The fibers are preferably between about 6 mm and about 25 mm long, and between about 10 μm and about 200 μm in diameter. The fibers may be added to carrier fluids comprising oil-base fluids, synthetic-base fluids, invert-emulsion-base fluids and combinations thereof. The preferred fiber concentration in the carrier fluid is between about 0.55 g/L and about 28.5 g/L. The carrier fluid may be a drilling fluid, a spacer fluid or a lost-circulation pill.

Abstract translation: 使用包含用亲脂性偶联剂，亲脂性成膜聚合物或两者涂覆（或尺寸）的纤维的油分散性缺失循环材料来控制地下井中的流失的方法。 纤维的长度优选为约6mm至约25mm，直径为约10μm至约200μm。 纤维可以添加到包含油基流体，合成基础流体，反相乳液基流体及其组合的载体流体中。 载体流体中优选的纤维浓度在约0.55g / L至约28.5g / L之间。 载体流体可以是钻井液，间隔液或失循环丸。

公开(公告)号：US08776882B2

公开(公告)日：2014-07-15

申请号：US13735028

申请日：2013-01-06

Applicant: Schlumberger Technology Corporation

Inventor： Nikhil Shindgikar ,  Jesse C. Lee ,  Slaheddine Kefi ,  Chrystel Brunet-Cambus ,  Michel Ermel

IPC: E21B21/00 ,  E21B33/138 ,  E21B43/26

CPC classification number: C09K8/426 ,  C04B28/02 ,  C09K8/03 ,  C09K8/40 ,  C09K8/487 ,  C09K8/50 ,  C09K8/516 ,  C09K8/80 ,  C09K2208/08 ,  C09K2208/18 ,  E21B21/003 ,  E21B33/13 ,  E21B33/138 ,  E21B43/267 ,  C04B20/0048

Abstract: Mixtures of fibers and solid particles are effective for curing fluid losses and lost circulation in a subterranean well. Stiff fibers are more effective than flexible ones; however, mixtures of stiff and flexible fibers have a synergistic effect. The quantity and particle-size distribution of the solids are optimized according to the stiffness, dimensions and concentrations of fibers.

Abstract translation: 纤维和固体颗粒的混合物对于固化地下井的流体损失和流失是有效的。 刚性纤维比柔性纤维更有效; 然而，刚性和柔性纤维的混合物具有协同效应。 根据纤维的刚度，尺寸和浓度优化固体的数量和粒度分布。

公开(公告)号：US20130118742A1

公开(公告)日：2013-05-16

申请号：US13735028

申请日：2013-01-06

Applicant: Schlumberger Technology Corporation

Inventor： Nikhil Shindgikar ,  Jesse C. Lee ,  Slah Kefi ,  Chrystel Brunet-Cambus ,  Michel Ermel

IPC: C09K8/42 ,  E21B33/138 ,  C09K8/50 ,  E21B33/13

CPC classification number: C09K8/426 ,  C04B28/02 ,  C09K8/03 ,  C09K8/40 ,  C09K8/487 ,  C09K8/50 ,  C09K8/516 ,  C09K8/80 ,  C09K2208/08 ,  C09K2208/18 ,  E21B21/003 ,  E21B33/13 ,  E21B33/138 ,  E21B43/267 ,  C04B20/0048

Abstract: Mixtures of fibers and solid particles are effective for curing fluid losses and lost circulation in a subterranean well. Stiff fibers are more effective than flexible ones; however, mixtures of stiff and flexible fibers have a synergistic effect. The quantity and particle-size distribution of the solids are optimized according to the stiffness, dimensions and concentrations of fibers.

Abstract translation: 纤维和固体颗粒的混合物对于固化地下井的流体损失和流失是有效的。 刚性纤维比柔性纤维更有效; 然而，刚性和柔性纤维的混合物具有协同效应。 根据纤维的刚度，尺寸和浓度优化固体的数量和粒度分布。