公开(公告)号：WO1996004460A1

公开(公告)日：1996-02-15

申请号：PCT/US1995009696

申请日：1995-07-28

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  SNIDER, Philip, M. ,  WESSON, David, S. ,  ANDRICH, Lyle, W.

IPC: E21B34/06

CPC classification number: E21B34/063 ,  E21B34/14

Abstract: An apparatus and method for controlling the pressure at which a fluid is introduced into a well penetrating a subterranean formation. The apparatus comprises a blow out sub having a sealed chamber (34) between two plugs (18, 26). The chamber is filled with a fluid at a known pressure. Thus, the pressure required to release the first plug (18) is independent of the pressure in the well below the sub. The sub is attached to a tubular and positioned within the well. The first plug is then released upon application of a predetermined pressure fluid pressure, and the second plug (26) is released upon application of a lesser pressure. The blow out sub may additionally comprise a tube (152) forming a channel through the first plug (118), the chamber (134), and the second plug (126), with a means (154, 156) for controlling fluid flow through the channel. A first fluid may be introduced into the well via the channel prior to releasing the first plug (118).

Abstract translation: 一种用于控制将流体引入穿透地层的井的压力的装置和方法。 该装置包括一个在两个插头（18,26）之间具有密封室（34）的吹出部分。 在已知压力下，腔体中充满了液体。 因此，释放第一塞子（18）所需的压力独立于下方的井中的压力。 该子附接到管状并且定位在井内。 然后在施加预定压力流体压力时释放第一塞子，并且在施加较小压力时释放第二塞子（26）。 吹出部分可以另外包括通过第一塞子（118），腔室（134）和第二塞子（126）形成通道的管（152），具有用于控制流体流过的装置（154,156） 这个频道。 在释放第一塞子（118）之前，可以经由通道将第一流体引入孔中。

公开(公告)号：WO1995027839A1

公开(公告)日：1995-10-19

申请号：PCT/US1995002456

申请日：1995-02-28

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  McCLURE, Donald, C. ,  HAINES, Hiemi, K.

IPC: E21B43/22

CPC classification number: C09K8/58 ,  C09K8/584

Abstract: A process for recovering oil from a multiple-layered heterogeneous reservoir with a higher oil saturation in the lower permeability layers than in the higher permeability layers. An aqueous surfactant solution is injected into the formation, where is imbibes into the lower permeability layers and displaces a first quantity of oil into the higher permeability layers. Next, a first aqueous fluid is injected to sweep the displaced oil from the higher permeability layers into at least one production well. A gas is injected into the formation to displace a second quantity of oil from the lower permeability layers. The second aqueous fluid is injected to sweep the displaced oil into at least one production well. The process may be repeated one or more times.

Abstract translation: 从低渗透层中具有较高渗透性层的较高油饱和度的多层异质储层中回收油的方法。 将表面活性剂水溶液注入到地层中，在那里吸入低渗透层并将第一量的油置换成较高的渗透层。 接下来，注入第一含水流体以将移动的油从较高渗透层扫过至至少一个生产井。 将气体注入到地层中以从下渗透层移位第二量的油。 注入第二含水流体以将置换的油清洗成至少一个生产井。 该过程可以重复一次或多次。

公开(公告)号：WO1995018909A1

公开(公告)日：1995-07-13

申请号：PCT/US1994010763

申请日：1994-09-22

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  SYDANSK, Robert, D.

IPC: E21B33/138

CPC classification number: C09K8/512 ,  Y10S507/903

Abstract: A process and composition are provided for permeability reduction in a hydrocarbon-bearing formation to improve hydrocarbon recovery therefrom. The process includes placement of a crosslinked polymer gel in the treatment region preceded by surface preparation of a gelation solution which is the gel precursor. The gelation solution containing a crosslinkable polymer and chromium(III)/carboxylate complex crosslinking agent is prepared by preforming the crosslinking agent in isolation from the polymer and thereafter combining the crosslinking agent and polymer in solution. The starting materials for the complex crosslinking agent are an organic chromium(III) salt and a selected polycarboxylate or alpha-hydroxy carboxylate anion. The gel is placed in the treatment region by injecting the gelation solution into the formation, displacing it into the desired treatment region and gelling the solution to completion forming the permeability-reducing gel in situ.

Abstract translation: 提供了一种方法和组合物，用于含烃地层中的渗透率降低以改善烃的回收。 该方法包括将交联聚合物凝胶放置在处理区域中，之后是凝胶化溶液的表面制备，其是凝胶前体。 含有可交联聚合物和铬（III）/羧酸盐络合物交联剂的凝胶化溶液通过与聚合物分离预先形成交联剂，然后将交联剂和聚合物在溶液中混合来制备。 复合交联剂的起始原料是有机铬（III）盐和选择的聚羧酸盐或α-羟基羧酸根阴离子。 通过将凝胶化溶液注入地层中将凝胶置于处理区域中，将其置换成所需的处理区域，并使溶液凝胶化，形成原位渗透性降低凝胶。

公开(公告)号：WO1994019576A1

公开(公告)日：1994-09-01

申请号：PCT/US1993010886

申请日：1993-11-11

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  BARTHORPE, Richard, T.

IPC: E21B37/06

CPC classification number: C02F5/10 ,  C02F1/5236 ,  C02F1/54 ,  C02F5/08

Abstract: A treatment process is provided for removing a scale-forming inorganic salt from a produced brine having a scale inhibitor and the inorganic salt dissolved therein. The process is initiated by adding an interfering agent to the produced brine which disrupts the function of the scale inhibitor, thereby enabling formation of an insoluble inorganic salt precipitate. The precipitate is readily separable from the aqueous brine.

Abstract translation: 提供了一种处理方法，用于从具有防垢剂和溶解于其中的无机盐的生产的盐水中除去水垢形成无机盐。 通过向产生的盐水中加入干扰剂来开始该过程，其破坏了阻垢剂的功能，从而形成不溶性无机盐沉淀物。 沉淀物容易与含水盐水分离。

公开(公告)号：WO1994014060A1

公开(公告)日：1994-06-23

申请号：PCT/US1993009962

申请日：1993-10-15

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  PROFFITT, Arthur, C. ,  BARRON, William, C.

IPC: G01N33/28

CPC classification number: G01N25/18 ,  G01N25/005 ,  G01N33/2823

Abstract: A composition analyzer and a method of use for determination of the masses of individual components in a multiphase multicomponent fluid system containing a gas. Data and relationships not measured by the analyzer during operation but required by the method are predetermined or researched and stored, and other required data is instantaneously obtained from the composition analyzer during process operation. All these data are used in an iteration process to accurately determine the mass composition of each fluid component. The preferred means for adding energy to the fluid mixture in the test apparatus is comprised of an electrically conductive conduit through which the fluid mixture flows and which heats the fluid mixture when electrically energized.

Abstract translation: 一种组成分析仪和用于测定含有气体的多相多组分流体系统中各个组分的质量的方法。 在操作期间由分析仪测量但是由方法要求的数据和关系是预定的或研究和存储的，并且在处理操作期间从组成分析器瞬时获得其他所需数据。 所有这些数据用于迭代过程以精确地确定每个流体组分的质量组成。 用于向测试装置中的流体混合物添加能量的优选方法包括导电导管，流体混合物通过该导电导管流动并且当电通电时加热流体混合物。

公开(公告)号：WO1994009255A1

公开(公告)日：1994-04-28

申请号：PCT/US1993006692

申请日：1993-07-15

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  GARBUTT, Charles, F. ,  ELLWOOD, David, E.

IPC: E21B47/00

CPC classification number: E21B47/011

Abstract: A means for taking pressure readings in a bottom-hole zone of a well without interfering with an operation in which solid material is moving through a tubing string. A pressure recorder (26) is enclosed in a carrier (28) attached to the outer surface of a tubing sub (32) near the end of the tubing string (16). The carrier walls include ports (30) which expose the pressure recorder (26) to the fluid in the bottom-hole zone. This arrangement allows operations such as sand fracture stimulations and rod pumping to be unimpeded by a pressure recorder.

Abstract translation: 用于在井的井底区域进行压力读数的手段，而不会干扰固体材料通过油管柱移动的操作。 压力记录器（26）被封闭在附接到管柱（16）的端部附近的管子（32）的外表面的载体（28）中。 载体壁包括将压力记录器（26）暴露于底孔区域中的流体的端口（30）。 这种布置允许诸如砂破裂刺激和杆泵送的操作被压力记录器阻挡。

公开(公告)号：WO1994003787A1

公开(公告)日：1994-02-17

申请号：PCT/US1993004947

申请日：1993-05-25

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  PHELPS, Eric, B. ,  COOK, Gary, R. ,  ROSZELLE, Wayne, O.

IPC: G01L19/04

CPC classification number: G01L27/005 ,  G01L9/085

Abstract: Disclosed is a system wherein the compensation for temperature effects on a pressure measurement gauge is accomplished by processing the raw pressure measurement signal from the gauge through a linear differential equation to produce a thermally compensated measurement. The linear differential equation expresses the thermally compensated pressure determination as a relation between a derivative of temperature and a derivative of pressure error. The linear differential equation contains several coefficients having constant values, and these constant values are computed by calibrating the pressure gauge in a pressure tank having a known pressure and temperature. When the gauge is later placed in an oil or gas well, the coefficient values are used to obtain the corrected measured pressure from the raw measured pressure received from the gauge.

Abstract translation: 公开了一种系统，其中对压力测量计的温度影响的补偿通过经由线性微分方程处理来自量规的原始压力测量信号来实现，以产生热补偿测量。 线性微分方程表示热补偿压力确定为温度导数与压力误差导数之间的关系。 线性微分方程包含具有恒定值的几个系数，并且通过校准具有已知压力和温度的压力罐中的压力计来计算这些常数值。 当量规稍后放置在油井或气井中时，系数值用于从从量规接收的原始测量压力获得校正的测量压力。

公开(公告)号：WO1994002707A1

公开(公告)日：1994-02-03

申请号：PCT/US1993004203

申请日：1993-05-03

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  SCHROEDER, Donald, E., Jr.

IPC: E21B43/04

CPC classification number: E21B43/025 ,  E21B43/045

Abstract: A flow-reducing material (41) is introduced into the annulus (28) between a tubular liner (22) and the well bore (16) so as to collect at the perforations (18, 20) in the well bore and the apertures (23) in the liner. This slows gravel slurry flow to the screen inner annulus and to the perforations (18, 20) to prevent gravel from bridging the annulus (28), at these locations. The material is removed after the risk of bridging has passed. Various flow-reducing materials, such as wax flakes, salt, clay and gel, may be employed. The method is particularly useful in deviated wells.

Abstract translation: 将流动减少材料（41）引入到管状衬套（22）和井眼（16）之间的环形空间（28）中，以便收集在井眼中的穿孔（18,20）和孔 23）。 这减缓了砾石浆料流到筛网内环和穿孔（18,20），以防止在这些位置处的砾石桥接环（28）。 在桥接的风险已经过去之后，材料被移除。 可以使用各种减少流动性的材料，例如蜡片，盐，粘土和凝胶。 该方法在偏斜井中特别有用。

公开(公告)号：WO1993024826A1

公开(公告)日：1993-12-09

申请号：PCT/US1993003169

申请日：1993-04-02

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  PROFFITT, Arthur, C. ,  BARRON, William, C.

IPC: G01N25/00

CPC classification number: G01N25/005 ,  G01N25/18 ,  G01N33/2823

Abstract: A method of determining the concentrations of fluids in a two-part fluid system. The heat loss in a test apparatus for measuring the temperatures and flow rate of a flowing fluid mixture is determined and the specific heat of the fluid mixture is calculated. Knowing the relationship between the specific heat of the fluid and its composition allows the fluid composition to be directly calculated, and hence the ratio of the two constituent fluids to be determined. A preferred heater is comprised of an electrically conductive conduit through which the fluid mixture flows which when energized efficiently heats the fluid mixture.

Abstract translation: 确定两部分流体系统中流体浓度的方法。 确定用于测量流动混合物的温度和流速的测试装置中的热损失，并计算流体混合物的比热。 了解流体比热与其组成之间的关系允许直接计算流体组成，并因此确定待确定的两种组分流体的比例。 优选的加热器包括导电导管，流体混合物通过该导电导管流动，当通电时有效地加热流体混合物。

公开(公告)号：WO1993018576A1

公开(公告)日：1993-09-16

申请号：PCT/US1992010950

申请日：1992-12-18

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  JOHNSON, Archie, C.

IPC: H02P03/24

CPC classification number: H02P1/26 ,  H02P3/24

Abstract: A method and means for stopping the backspinning of a submersible pump motor prior to restarting the motor. A control circuit is provided which rectifies A.C. control voltage and applies the resulting D.C. voltage to an induction motor. This sets up a stationary magnetic field in the stator of the motor which creates a braking effect on the rotor. By braking the backspinning to a stop or to a speed which will not harm the motor if restarted while still backspinning, the motor can be restarted without having to wait until the downward flow of fluid causing the backspinning stops.