公开(公告)号：US4040487A

公开(公告)日：1977-08-09

申请号：US689621

申请日：1976-05-24

Applicant: Harold L. Cook, Jr. ,  Ernest C. Geer ,  Donald L. Katz

Inventor： Harold L. Cook, Jr. ,  Ernest C. Geer ,  Donald L. Katz

IPC: E21B43/00

CPC classification number: E21B43/00

Abstract: A method of increasing the recovery of natural gas from a geo-pressured aquifer containing water and gas and having a zone of free gas dispersed in water, by providing one or more wells extending from the surface to and completed in the geo-pressured aquifer in said zone and allowing the aquifer to flow water and gas under natural pressure through the well and lowering the pressure in the aquifer sufficiently to allow the gas to be released from solution in the water whereby the gas released will migrate more freely to the well and be produced. Also, any gas-phase saturation in the aquifer and any deposit of gaseous hydrocarbons in the formation in pressure communication with the wells will expand due to lowered aquifer pressure and be encouraged to flow to the wells and be recovered. Preferably, the wells are produced at a high enough rate of production to reduce the existing aquifer pressure in the drainage area of the wells as quickly as possible so that gas may be released from solution in the water and so that gaseous hydrocarbons in the formation may expand and flow to the wells. A high initial flow rate of at least 15,000 barrels of water per day from each well is necessary to effect the lowering of the aquifer pressure by at least 25% in order to provide the necessary mobility of the gas to obtain the enhanced gas recovery by the present method.

公开(公告)号：US4090564A

公开(公告)日：1978-05-23

申请号：US806414

申请日：1977-06-14

Applicant: Harold L. Cook, Jr. ,  Ernest C. Geer

Inventor： Harold L. Cook, Jr. ,  Ernest C. Geer

IPC: E21B43/00 ,  E21B43/18

CPC classification number: E21B43/18 ,  E21B43/00

Abstract: A method for the economic recovery of significant additional quantities of oil and gas from a geo-pressured water-drive oil reservoir where oil production has ceased by conventional production techniques and equipment. The method increases the recovery from this type of reservoir, after primary depletion by conventional techniques, by producing the water (and a quantity of oil) from the wells at an abnormally high rate of flow and thereby induces a significant pressure drop in the reservoir remote from the well. This will then induce a significant release of solution gas from the oil through the reservoir. Since the residual hydrocarbon saturation in a water-wet porous media is a constant value for a given reservoir rock, a part of the gas released from solution will increase the hydrocarbon saturation and allow a portion of the oil and gas to become mobile and migrate to the producing wells to be recovered.

Abstract translation: 一种通过常规生产技术和设备停止石油生产的地质压力水驱油库经济复苏大量石油和天然气的方法。 该方法通过常规技术在初次耗尽之后，通过以异常高的流速从井中产生水（和一定量的油）从而增加了这种类型的储层的回收，从而在储层远程中引起显着的压降 从井。 这将导致溶液气体从油通过储存器的显着释放。 由于水湿多孔介质中的残留烃饱和度对于给定的储层岩石而言是一个恒定的值，所以从溶液释放的部分气体将增加烃饱和度，并使一部分油和气体成为可移动的并迁移到 生产井要回收。

公开(公告)号：US2542432A

公开(公告)日：1951-02-20

申请号：US78099147

申请日：1947-10-20

Applicant: HAROLD L COOK ,  LEE R SCHERMERHORN

Inventor： RIVERMAN FRANCIS E

IPC: E05F15/16

CPC classification number: E05F15/684 ,  E05Y2201/646 ,  E05Y2800/00 ,  E05Y2900/106

公开(公告)号：US4042034A

公开(公告)日：1977-08-16

申请号：US689622

申请日：1976-05-24

Applicant: Harold L. Cook, Jr. ,  Ernest C. Geer

Inventor： Harold L. Cook, Jr. ,  Ernest C. Geer

IPC: E21B43/00

CPC classification number: E21B43/00

Abstract: A method of increasing the recovery of natural gas from a geo-pressured aquifer containing water and gas and having a zone of free gas dispersed in water, by providing one or more wells extending from the surface to and completed in the geo-pressured aquifer in said zone and allowing the aquifer to flow water and gas under natural pressure through the well and lowering the pressure in the aquifer sufficiently to allow the gas to be released from solution in the water whereby the gas released will migrate more freely to the well and be produced. Also, any gas-phase saturation in the aquifer and any deposit of gaseous hydrocarbons in the formation in pressure communication with the wells will expand due to lowered aquifer pressure and be encouraged to flow to the wells and be recovered. Preferably, the wells are produced at a high enough rate of production to reduce the existing aquifer pressure in the drainage area of the wells as quickly as possible so that gas may be released from solution in the water and so that gaseous hydrocarbons in the formation may expand and flow to the wells. A high initial flow rate of at least 15,000 barrels of water per day from each well is necessary to effect the lowering of the aquifer pressure by at least 25% in order to provide the necessary mobility of the gas to obtain the enhanced gas recovery by the present method.

Abstract translation: 一种通过提供一个或多个从表面延伸到地层压力含水层并在其中完成的井，从而增加含有水和气体的地压地层含水层的天然气回收并具有分散在水中的游离气体区域的方法 所述区域并且允许含水层在天然压力下通过井流动水和气体并充分降低含水层中的压力，以允许气体从水中的溶液中释放，由此释放的气体将更自由地迁移到井，并且 生产。 此外，含水层中的任何气相饱和以及与井压力连通的地层中气态烃的任何沉积物将由于含水层压力降低而膨胀，并被鼓励流入井并回收。 优选地，以足够高的生产率生产井，以尽可能快地减少井的排水区域中的现有含水层压力，使得气体可以从水中的溶液中释放，并且使得地层中的气态烃可以 扩展和流向井。 每个井每天至少需要高达15,000桶水的初始流速，才能使含水层压力降低至少25％，以提供必要的气体迁移率，以获得气体回收率。 目前的方法。

公开(公告)号：US4116276A

公开(公告)日：1978-09-26

申请号：US807275

申请日：1977-06-16

Applicant: Harold L. Cook, Jr. ,  Ernest C. Geer ,  Donald L. Katz

Inventor： Harold L. Cook, Jr. ,  Ernest C. Geer ,  Donald L. Katz

IPC: E21B43/00 ,  E21B43/20

CPC classification number: E21B43/00 ,  E21B43/20

Abstract: A method of increasing the recovery of natural gas from a geo-pressured aquifer having a structural high or other "trap" from which gas or other fluids cannot escape upward and containing water and gas in solution in the water. The method includes producing water, from one or more wells extending from the surface and completed in the geo-pressured aquifer at a point below and spaced from and remote from the trap, by reservoir pressure at a high enough rate of production to reduce the existing pressure of the aquifer to allow a portion of the gas in solution to be released from the water whereby some of the released gas will migrate upward to form or increase any free-gas phase existing in the trap. Thereafter, gas is produced from one or more wells extending from the surface to the free-gas phase in the trap. Furthermore, the production of water is continued from the one or more wells extending from the surface and completed in said geo-pressured aquifer at a point below and spaced from the trap while producing gas from the trap. In the event that a free-gas phase is dispersed in the water, a portion of the free-gas phase will expand and migrate and some of the expanded gas will migrate more freely to the down structure wells and be produced and some of the expanded free-gas phase will migrate upward to the trap and be produced from the wells completed in the trap.

Abstract translation: 从具有结构高或其他“陷阱”的地压加压含水层中增加天然气回收率的方法，气体或其它流体不能从其中向上逸出并且在水中溶液中含有水和气体。 该方法包括从在表面延伸的一个或多个井中产生水，并且通过在足够高的生产率下的储层压力在位于低于和远离捕集阱的点处的地压地层中完成的水，以减少现有的 含水层的压力允许溶液中的一部分气体从水中释放，由此一些释放的气体将向上迁移以形成或增加存在于阱中的任何自由气相。 此后，从陷阱中从表面延伸到自由气相的一个或多个孔产生气体。 此外，从表面延伸的一个或多个井继续生产水，并且在所述地压加压的含水层中，在从捕集器产生气体的同时，在阱的下方和间隔开的一点处完成。 在自由气相分散在水中的情况下，自由气相的一部分将膨胀和迁移，并且一些膨胀气体将更自由地迁移到下部结构井并被生产，并且一些膨胀的 自由气相将向上迁移到陷阱，并从陷阱中完成的井产生。