公开(公告)号：US4184549A

公开(公告)日：1980-01-22

申请号：US863508

申请日：1977-12-22

申请人： Vernon H. Schievelbein

发明人： Vernon H. Schievelbein

IPC分类号： C09K8/584 ,  C09K8/592 ,  E21B43/16 ,  E21B43/24 ,  E21B43/22

CPC分类号： E21B43/162 ,  C09K8/584 ,  C09K8/592 ,  E21B43/24

摘要： The conformance of an aqueous flooding oil recovery process, including steam, hot water or surfactant or other chemicalized water flood process, in a formation containing at least two zones of different permeability, the permeability of one zone being at least 50 percent greater than the permeability of the other zone, is improved by flooding until the higher permeability zone has been depleted, after which a fluid is injected into the depleted, high permeability zone, said fluid having relatively low viscosity at the time of injection and containing a mixture of at least two surface active agents which promotes the formation of a coarse emulsion in the flow channels of the formation which reduces the permeability of the high permeability zone. Since the viscosity of the fluid injected into the previously water flooded, high permeability zone is no greater than water, it is injected easily into the zone and moves through substantially the same flow channels as water would move in the formation. After the permeability of the first zone has been reduced substantially, flooding may then be accomplished in the second zone which was originally not invaded by the injected oil displacing fluid since its permeability was substantially less than the permeability of the first zone. The surface active agents are tailored to exhibit optimum emulsion formation properties with the particular aqueous fluid present in the flow channels of the formation to be treated.

摘要翻译： 含水驱油回收方法（包括蒸汽，热水或表面活性剂或其他化学水浸法）在含有至少两个不同渗透率的区域的地层中的一致性，一个区域的渗透率比渗透率大至少50％ 通过淹水得到改善，直到较高渗透性区域已经耗尽，之后将流体注入耗尽的高渗透性区域中，所述流体在注射时具有相对较低的粘度，并且至少含有至少 两种表面活性剂促进在地层的流动通道中形成粗乳液，这降低了高渗透率区的渗透性。 由于注入先前水淹的高渗透性区域的流体的粘度不大于水，所以其容易注入区域中并且通过与水在地层中移动的基本上相同的流动通道移动。 在第一区域的渗透性已经基本上减小之后，可以在第二区域中实现溢流，该第二区域最初不被注入的排油流体侵入，因为其渗透性基本上小于第一区域的渗透性。 定制表面活性剂以显示出在待处理地层的流动通道中存在的特定含水流体的最佳乳液形成性质。

公开(公告)号：US4161982A

公开(公告)日：1979-07-24

申请号：US863502

申请日：1977-12-22

申请人： Vernon H. Schievelbein ,  Mohan V. Kudchadker ,  James E. Varnon ,  Lawrence E. Whittington

发明人： Vernon H. Schievelbein ,  Mohan V. Kudchadker ,  James E. Varnon ,  Lawrence E. Whittington

IPC分类号： C09K8/584 ,  E21B43/16 ,  E21B43/22

CPC分类号： C09K8/584 ,  E21B43/162

摘要： The conformance of an enhanced oil recovery process, including water flood, surfactant or other chemicalized water flood process, in a formation containing at least two zones of varying permeability, the permeability of one zone being at least 50 percent greater than the permeability of the other zone, is improved by flooding until the higher permeability zone has been depleted, after which a fluid is injected into the high permeability zone, said fluid having relatively low viscosity at the time of injection and containing a mixture of surfactants or surface active agents which promote the formation of a coarse emulsion in the flow channels of the formation which reduces the permeability of the high permeability zone. Since the viscosity of the fluid injected into the previously flooded, high permeability zone is no greater than water, it is injected easily into the zone and moves through substantially the same flow channels as water would move in the formation. After the permeability of the first zone has been reduced substantially, water flooding may then be accomplished in the second zone which was originally not invaded by the injected water since its permeability was substantially less than the permeability of the first zone.

摘要翻译： 在包含至少两个不同渗透性区域的地层中，强化采油过程（包括水浸，表面活性剂或其他化学水浸法）的一致性，一个区域的渗透率比另一个区域的渗透率大至少50％ 通过淹水改善，直到较高渗透性区域已经耗尽，之后将流体注入高渗透性区域中，所述流体在注射时具有相对低的粘度并且含有表面活性剂或表面活性剂的混合物，其促进 在地层的流动通道中形成粗糙的乳液，这降低了高渗透率区域的渗透性。 由于注入到先前淹没的高渗透性区域中的流体的粘度不大于水，所以其容易地注入到该区域中并且通过与水在地层中移动的基本上相同的流动通道移动。 在第一区域的渗透性已经大大降低之后，可以在最初不被注入的水侵入的第二区域中实现溢流，因为其渗透性基本上小于第一区域的渗透性。

公开(公告)号：US4160480A

公开(公告)日：1979-07-10

申请号：US863505

申请日：1977-12-22

申请人： Vernon H. Schievelbein ,  Jack H. Park

发明人： Vernon H. Schievelbein ,  Jack H. Park

IPC分类号： C09K8/584 ,  E21B43/16 ,  E21B43/22

CPC分类号： E21B43/162 ,  C09K8/584

摘要： The conformance of an enhanced oil recovery process, including waterflood, surfactant or other chemicalized water flood process, in a formation containing at least two strata or zones of varying permeability, the permeability of one zone being at least 50 percent greater than the permeability of the other zone, is improved by flooding until the higher permeability zone has been depleted, after which an aqueous fluid is injected into the high permeability zone, said fluid having relatively low viscosity at the time of injection and containing a particular surface active agent which promotes the formation of a coarse emulsion in the flow channels of the formation which reduces the permeability of the high permeability zone. After the permeability of the first zone has been reduced substantially, flooding may then be accomplished in the second zone which was originally not invaded by the injected oil recovery fluid since its permeability was substantially less than the permeability of the first zone. The surface active agents are individually tailored and the ratio of dissimilar surfactants balanced to exhibit optimum emulsion formation properties with the particular aqueous fluid present in the flow channels of the formation to be treated.

摘要翻译： 在含有至少两层不同渗透性的地层或地层中，强化采油过程（包括水驱，表面活性剂或其他化学化水淹过程）的一致性，一个区域的渗透率比其渗透率大至少50％ 其他区域通过淹水改善直到较高渗透性区域已经耗尽，然后将水性流体注入高渗透性区域中，所述流体在注射时具有相对低的粘度并且含有特定的表面活性剂，其促进 在地层的流动通道中形成粗糙的乳液，这降低了高渗透率区域的渗透性。 在第一区域的渗透性已经大大降低之后，可以在第二区域中实现溢流，该第二区域原本不被注入的采油流体侵入，因为其渗透率基本上小于第一区域的渗透性。 单独定制表面活性剂，并且不同表面活性剂的比例平衡以显示最佳的乳液形成性质，特定的含水流体存在于待处理地层的流动通道中。

公开(公告)号：US4088188A

公开(公告)日：1978-05-09

申请号：US644365

申请日：1975-12-24

申请人： Richard H. Widmyer

发明人： Richard H. Widmyer

IPC分类号： E21B43/16 ,  E21B43/24

CPC分类号： E21B43/24 ,  E21B43/162

摘要： Viscous oil recovery methods employing well-to-well throughput steam injection are frequently less successful than anticipated because the process experiences poor vertical conformance, meaning that only a portion of the full vertical thickness of the oil saturated reservoir is contacted by the injected steam. Because the specific gravity of the vapor phase portion of saturated steam is substantially less than the specific gravity of formation petroleum fluids, the vapor phase steam channels across the upper portion of the formation and only contacts and displaces petroleum present in said upper portion of the formation, bypassing substantial amounts of petroleum in the lower portion of the formation. By separating saturated steam into two components, one predominantly liquid phase and one predominantly gaseous phase, and injecting the hot liquid into the upper portion of the formation and the vapor into the lower portion of the formation, substantially greater amounts of formation petroleum are contacted and recovered by steam. Steam may be separated into liquid and vapor phase components on the surface and injected by a separate flow path into separately completed intervals, or the separation may be accomplished in a downhole separator. The process may be applied using steam alone, or other gaseous and/or liquid phase additives to steam may be injected in the same manner.

摘要翻译： 使用井眼良好的蒸汽注入的粘性油回收方法通常比预期的更不成功，因为该方法的垂直一致性差，这意味着只有一部分油饱和储层的全垂直厚度被注入的蒸汽接触。 由于饱和蒸汽的气相部分的比重基本上小于形成石油流体的比重，所以跨过地层上部的气相蒸汽通道仅接触并置换存在于地层上部的石油 绕过地层下部的大量石油。 通过将饱和蒸汽分离成两个组分，一个主要是液相和一个主要是气相，并将热液体注入地层的上部，将蒸气注入地层的下部，基本上更大量的地层石油接触， 蒸汽回收 蒸汽可以分离成表面上的液相和气相组分，并通过单独的流动路径分离成单独完成的间隔，或者可以在井下分离器中实现分离。 该方法可以使用单独的蒸汽施用，或者可以以相同的方式注入其它气态和/或液相添加剂到蒸汽中。

公开(公告)号：US3957116A

公开(公告)日：1976-05-18

申请号：US578450

申请日：1975-05-19

申请人： Larry S. Bouck

发明人： Larry S. Bouck

IPC分类号： C09K8/60 ,  E21B43/16 ,  E21B43/20 ,  E21B43/30 ,  E21B43/22

CPC分类号： E21B43/162 ,  C09K8/60 ,  E21B43/20 ,  E21B43/30

摘要： In displacement processes for recovery of liquid hydrocarbons from a hydrocarbon bearing formation having zones of different permeability wherein such displacement processes comprise injecting a drive fluid through an injection well vertically traversing the formation and recovering by means of a production well the liquid hydrocarbons which are displaced by the injection of the drive fluid; this invention involves an improvement comprising injecting a water insoluble liquid into the permeable zone to increase drive efficiency in the less permeable zone.

摘要翻译： 在用于从具有不同渗透性区域的含烃地层回收液态烃的置换过程中，其中这种排出过程包括通过垂直穿过地层的注入井注入驱动流体，并通过生产井回收由 驱动液的注入; 本发明涉及一种改进，包括将不溶于水的液体注入渗透区域以提高较不透水区域的驱动效率。

公开(公告)号：US3838737A

公开(公告)日：1974-10-01

申请号：US35740573

申请日：1973-05-04

申请人： TEXACO INC

发明人： ALLEN J ,  TATE J

IPC分类号： E21B43/16

CPC分类号： E21B43/16 ,  E21B43/162

摘要： A method for the miscible displacement of petroleum from a subterranean reservoir is provided. The method involves injecting two miscible fluids into an injection well and producing petroleum from a production well. A first solvent, more dense than water, is injected into the reservoir near the top of the reservoir, and a second solvent, less dense than water, is injected into the reservoir near or at the bottom of the reservoir. Both solvents are followed by water. The first solvent will tend to flow downward and the second solvent will tend to rise. The solvents will blend and provide piston-like displacement through the reservoir.

摘要翻译： 提供了一种用于从地下储层混合排出石油的方法。 该方法包括将两种可混溶的流体注入注入井并从生产井生产石油。 将比水更致密的第一溶剂注入到储存器顶部附近的储存器中，并且比水密度低的第二溶剂被注入储存器附近或底部的储存器中。 两种溶剂之后都是水。 第一溶剂倾向于向下流动，而第二溶剂将趋于升高。 溶剂将混合并提供通过储存器的类似活塞的位移。

公开(公告)号：US20240318530A1

公开(公告)日：2024-09-26

申请号：US18261140

申请日：2022-01-14

申请人： NCS MULTISTAGE INC.

发明人： Michael WERRIES ,  Jesse POWELL ,  Ryan REDECOPP

IPC分类号： E21B34/14 ,  E21B23/08 ,  E21B43/16 ,  E21B47/06

CPC分类号： E21B34/142 ,  E21B23/08 ,  E21B43/162 ,  E21B43/164 ,  E21B47/06 ,  E21B2200/06

摘要： An actuation dart for deployment down a tubing string installed within a wellbore and provided with one or more valve assemblies is provided. The actuation dart includes a dart body adapted to be carried down the tubing string to the valve assembly via fluid flow. The dart body has a shifting head provided at a first end of the dart body, the shifting head being configured to engage and shift the valve assembly in the open configuration to enable fluid injection in a reservoir surrounding the wellbore. A method for hydrocarbon recovery from a wellbore using the actuation dart is also provided, along with a wellbore system adapted to receive the actuation dart.

公开(公告)号：US12012832B1

公开(公告)日：2024-06-18

申请号：US18226472

申请日：2023-07-26

申请人： CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

发明人： Sen Wang ,  Kun Wang ,  Qihong Feng ,  Shunming Li ,  Yijing Du ,  Zheng Wu ,  Xiang Wang ,  Jiyuan Zhang ,  Xianmin Zhang

IPC分类号： E21B43/16 ,  G01N15/08 ,  G01N33/24 ,  G06F30/28 ,  G06F113/08

CPC分类号： E21B43/162 ,  G01N15/0826 ,  G06F30/28 ,  G06F2113/08

摘要： The present disclosure relates to a method and system for predicting a time-varying principle of waterflooding oil reservoir formation parameters. Firstly, a T2 spectrum-pore size relation model is built according to a measured pore size distribution curve and a measured T2 spectrum. A T2 spectrum of a rock sample at different water injection amounts during a waterflooding physical simulation experiment is acquired. The acquired T2 spectrum at different water injection amounts is then converted into a pore size distribution at different water injection amounts, and a pore network model at different water injection amounts is built with the pore size distribution. Oil-water two-phase flow simulation is performed, and a corresponding oil-water two-phase relative permeability curve of the rock sample at different pore volume (PV) multiples is obtained eventually. The oil-water two-phase relative permeability curve is the formation parameters in the waterflooding oil reservoir.

公开(公告)号：US20230392483A1

公开(公告)日：2023-12-07

申请号：US18454269

申请日：2023-08-23

申请人： Xuebing Fu

发明人： Xuebing Fu

IPC分类号： E21B43/16 ,  E21B43/14

CPC分类号： E21B43/162 ,  E21B43/14

摘要： Some methods of production hydrocarbons from a formation comprise drilling two or more horizontal wellbores in the formation, at least a portion of each extending in a direction that is within 20 degrees of parallel to a direction of maximum horizontal stress of the formation. The horizontal wellbores can include one or more producer wellbores and one or more injector wellbores, each of the producer wellbore(s) separated from at least one of the injector wellbore(s) by a formation-permeability-dependent well spacing. Some comprise comprising creating one or more longitudinal fractures that are in communication with the formation in each of the horizontal wellbores, injecting a recovery fluid comprising gas into at least one of the injector wellbore(s) such that the recovery fluid flows into the formation, and receiving hydrocarbons from the formation into at least one of the producer wellbore(s).

公开(公告)号：US20230323744A1

公开(公告)日：2023-10-12

申请号：US18203454

申请日：2023-05-30

申请人： Baker Hughes Energy Technology UK Limited

发明人： Scott Macdonald ,  Stephen Mackin ,  Emma Stewart

IPC分类号： E21B43/12 ,  E21B47/06 ,  E21B43/16 ,  E21B47/12

CPC分类号： E21B43/121 ,  E21B43/162 ,  E21B47/06 ,  E21B47/138 ,  E21B2200/20

摘要： A system and method for a fully-integrated flow control module (FI-FCM) in a hydrocarbon reservoir is disclosed. The FI-FCM is a unibody structure or a single-piece machined body having a flow meter integrated to the unibody structure. A choke is to be associated within a provision of the FI-FCM that also has an entry flow path for reservoir fluid and an exit flow path for the reservoir fluid. The entry flow path and the exit flow path inside the unibody structure or the single-piece machined body. Fluid communication is enabled between the flow meter, which is upstream relative to the choke, and an entry flow path. The choke is to control flow between the entry flow path and the exit flow path.