公开(公告)号：US20160208587A1

公开(公告)日：2016-07-21

申请号：US14678338

申请日：2015-04-03

Applicant: GEODynamics, Inc.

Inventor： John T. HARDESTY ,  Nathan G. CLARK ,  James A. ROLLINS

IPC: E21B43/117

CPC classification number: E21B43/117 ,  E21B43/119

Abstract: An externally-oriented internally-corrected perforating gun system and method for accurate perforation in a deviated wellbore is disclosed. The system/method includes a gun string assembly (GSA) deployed in a wellbore with an external protuberance member (EPM) and an internal pivot support (IPS). With the EPM oriented to the high side of the wellbore, the center of mass of the GSA positions the GSA at the lower side of the wellbore surface. The IPS is attached to internal gun components such end plate, charge holder tube, detonating cord or charge case. The charges inside the charge holder tube move with the gravitational vector about the IPS and point more accurately in the desired direction for perforating. The external orientation of the EPM along with limited internal swing about the IPS provide for an accurate orientation of the charges that results in efficient and effective perforating through a hydrocarbon formation.

Abstract translation: 公开了一种外部取向的内部修正的穿孔枪系统和用于在偏心井筒中精确穿孔的方法。 系统/方法包括部署在具有外部突出构件（EPM）和内部枢转支撑（IPS）的井眼中的枪串组件（GSA）。 随着EPM定位到井筒的高侧，GSA的质心位于井筒表面下侧的GSA。 IPS连接到内部枪组件，如端板，充电座管，引爆线或充电箱。 电荷保持器管内的电荷随着关于IPS的重力矢量移动，并且在所需的穿孔方向上更精确地指向。 EPM的外部方向以及关于IPS的有限的内部摆动提供了精确的电荷取向，从而导致通过烃地层的有效和有效的穿孔。

公开(公告)号：US20150226043A1

公开(公告)日：2015-08-13

申请号：US14598868

申请日：2015-01-16

Applicant: GEODynamics, Inc.

Inventor： John T. HARDESTY ,  Nathan G. CLARK ,  James A. ROLLINS ,  David S. WESSON

IPC: E21B43/117

CPC classification number: E21B43/117 ,  E21B43/119

Abstract: A limited entry perforating phased gun system and method for accurate perforation in a deviated/horizontal wellbore is disclosed. The system/method includes a gun string assembly (GSA) deployed in a wellbore with shaped charge clusters. The charges are spaced and angled such that, when perforated, they intersect at a preferred fracturing plane. Upon fracturing, the fractures initiate at least principal stress location in a preferred fracturing plane perpendicular to the wellbore from an upward and downward location of the wellbore. Thereafter, the fractures connect radially about the wellbore in the preferred fracturing plane. The fracture treatment in the preferred fracturing plane creates minimal tortuosity paths for longer extension of fractures that enables efficient oil and gas flow rates during production.

Abstract translation: 公开了一种有限入射穿孔相位枪系统和在偏斜/水平井筒中精确穿孔的方法。 系统/方法包括部署在具有成形电荷簇的井筒中的枪串组件（GSA）。 电荷被间隔开并成角度，使得当穿孔时它们在优选的压裂平面相交。 在断裂时，裂缝从井眼的向上和向下的位置开始至少在垂直于井筒的优选压裂平面中的主应力位置。 此后，裂缝在优选的压裂平面内围绕井筒径向连接。 在优选的压裂平面中的断裂处理为裂缝的更长延伸创造了最小的弯曲路径，从而在生产过程中实现了有效的油气流速。