公开(公告)号：US20110155371A1

公开(公告)日：2011-06-30

申请号：US12827475

申请日：2010-06-30

Applicant: Mohan K.R. Panga ,  Philip F. Sullivan ,  Balkrishna Gadiyar ,  Ryan Hartman ,  Bruno Drochon ,  John W. Still ,  Bryan Stamm

Inventor： Mohan K.R. Panga ,  Philip F. Sullivan ,  Balkrishna Gadiyar ,  Ryan Hartman ,  Bruno Drochon ,  John W. Still ,  Bryan Stamm

IPC: E21B43/04 ,  C09K8/00

CPC classification number: C09K8/80 ,  C09K8/805 ,  E21B43/04 ,  E21B43/267

Abstract: A slurry and method are disclosed for low damage gravel packing. The slurry comprises a solids mixture comprising a plurality of volume-averaged particle size distribution (PSD) modes such that a packed volume fraction (PVF) exceeds 0.75; a carrier fluid in an amount to provide a solids volume fraction (SVF) less than the PVF of the solids mixture; and a stability additive to inhibit settling of the solids mixture. The method comprises circulating the slurry into a wellbore to deposit the slurry downhole; terminating the slurry circulation for a period of time, wherein the stability additive inhibits settling of the solids mixture; and thereafter circulating the deposited slurry in contact with a surface of a screen. Stability additives disclosed include colloidal particles, hydratable polymer particles, and particles having an aspect ratio above 6.

Abstract translation: 公开了一种用于低损伤砾石包装的浆料和方法。 该浆液包含一种包含多个体积平均粒度分布（PSD）模式的固体混合物，使得填充体积分数（PVF）超过0.75; 载体流体，其量提供小于固体混合物的PVF的固体体积分数（SVF）; 以及稳定添加剂以抑制固体混合物的沉降。 该方法包括将浆料循环到井眼中以将井下的泥浆沉积; 终止浆料循环一段时间，其中稳定性添加剂抑制固体混合物的沉降; 然后使沉积的浆料与筛网的表面接触。 所公开的稳定添加剂包括胶体颗粒，可水合的聚合物颗粒和长宽比高于6的颗粒。

公开(公告)号：US20110005760A1

公开(公告)日：2011-01-13

申请号：US12870937

申请日：2010-08-30

Applicant: Ryan Hartman ,  Mohan K.R. Panga ,  Bruno Drochon ,  John W. Still

Inventor： Ryan Hartman ,  Mohan K.R. Panga ,  Bruno Drochon ,  John W. Still

IPC: E21B43/267

CPC classification number: C09K8/76 ,  C09K8/536 ,  C09K8/64 ,  C09K8/68 ,  C09K8/703 ,  C09K8/80 ,  E21B43/267

Abstract: A method of fracturing a subterranean formation comprising at least in part shale formation, comprises providing a carrier fluid; providing a particulate blend including a first amount of particulates having a first average particle size between about 100 and 2000 microns and a second amount of particulates having a second average particle size between about three and twenty times smaller than the first average particle size, such that a packed volume fraction of the particulate blend exceeds 0.75; combining the carrier fluid and the particulate blend into a fracturing slurry; fracturing the formation with the fracturing slurry to create at least a fracture; and removing the second amount of particulates from the fracture.

Abstract translation: 一种压裂地层的方法，包括至少部分地页岩形成，包括提供载体流体; 提供包含第一量的第一平均颗粒尺寸在约100和2000微米之间的颗粒的颗粒混合物和第二量的第二平均颗粒尺寸小于第一平均颗粒尺寸的约2-3倍的颗粒，使得 颗粒混合物的填充体积分数超过0.75; 将载体流体和颗粒混合物结合到压裂浆料中; 用压裂浆料破碎地层以产生至少一个裂缝; 并从裂缝中去除第二量的微粒。

公开(公告)号：US20100004146A1

公开(公告)日：2010-01-07

申请号：US12166681

申请日：2008-07-02

Applicant: Mohan K.R. Panga ,  Carlos Abad ,  John W. Still ,  Bruno Drochon

Inventor： Mohan K.R. Panga ,  Carlos Abad ,  John W. Still ,  Bruno Drochon

IPC: C09K8/76

CPC classification number: C09K8/03 ,  C04B28/02 ,  C09K8/42 ,  C09K8/487 ,  C09K8/5045 ,  C09K8/508 ,  C09K8/5083 ,  C09K8/70 ,  C04B20/0008

Abstract: A method of controlling leak-off and reducing the concentration of polymers (and/or other materials) in filter cakes formed when oilfield treatment fluids flow through subterranean formation faces involves adding large plate-like degradable and/or non-degradable, particles to polymer or VES-viscosified oilfield treatment fluids, at concentrations of such particles that are less than that required to cover the contacted formation face with a monolayer of such particles. When these large plate-like degradable and/or non-degradable particles are included in the fluid, polymer concentrates to form filter cake only in regions on the formation face (for example fracture faces) not shielded by the large plate-like particles, and the remaining formation face is not covered by concentrated polymer. As a result, the damage due to concentration of polymer and/or other materials in the filter cake during leak-off is reduced, and subsequent clean-up of the filter cake is easier.

Abstract translation: 当油田处理流体流过地下地层时形成的过滤饼中的泄漏和减少聚合物（和/或其他材料）浓度的方法包括将大的板状可降解和/或不可降解的颗粒加入到聚合物 或VES-粘稠油田处理液，其浓度小于用单层这种颗粒覆盖接触的形成面所需的颗粒。 当这些大的板状可降解和/或不可降解的颗粒包含在流体中时，聚合物仅在不被大板状颗粒屏蔽的形成面（例如断裂面）上的区域中集中以形成滤饼，并且 剩余的形成面不被浓缩聚合物覆盖。 结果，由于泄漏时滤饼中的聚合物和/或其它材料的浓度而导致的损伤减少，并且滤饼的随后的清理更容易。