公开(公告)号：WO1994029753A1

公开(公告)日：1994-12-22

申请号：PCT/US1994003926

申请日：1994-04-08

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  HURLEY, Neil, F.

IPC: G01V03/20

CPC classification number: G01V3/20 ,  E21B47/026

Abstract: A process for analyzing geological bedding plane data from a well, and plotting the cumulative dip angle and dip direction of the bedding planes with respect to depth. The cumulative dip angle may also be plotted with respect to sample numbers, which are a function of depth. The process further analyzes the cumulative dip data to produce a series of straight line approximations of various groupings of data. When these straight line approximations intercept, the interception often indicates a fault or unconformity at the location of the interception. The process further analyzes the cumulative dip plot by taking the first derivative of the plotted line. A stepwise shift in the derivative indicates an inflection point in the line, which often indicates a fault or unconformity. The process also plots the dip direction as the color or symbol of each point plotted, and a color or symbol change often indicates a fault or unconformity.

Abstract translation: 从井中分析地质层面平面数据的过程，绘制层面平面相对于深度的累积倾角和倾角方向。 相对于作为深度的函数的样本数，也可以绘制累积倾角。 该过程进一步分析累积倾斜数据以产生各种数据分组的一系列直线近似。 当这些直线近似截取时，截取通常表示截取位置处的故障或不整合。 该过程通过采用绘制线的一阶导数进一步分析累积倾向图。 导数中的逐步偏移表示线中的拐点，这通常表示故障或不整合。 该过程还绘制了每个点的颜色或符号绘制的倾斜方向，颜色或符号变化通常表示故障或不整合。

公开(公告)号：WO1994023174A1

公开(公告)日：1994-10-13

申请号：PCT/US1994002974

申请日：1994-03-18

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  STOLTZ, Ronald, P.

IPC: E21B17/10

CPC classification number: E21B17/1057

Abstract: A method and apparatus for running in a tubing string through a high angle or horizontal wellbore without damage to equipment on the tubing string. Centralizers are mounted on the tubing string at spaced intervals on either side of the equipment. The centralizers include spherical rollers which contact the wellbore casing and which are mounted so as to have little or no radially inward movement.

Abstract translation: 一种用于在油管柱中通过高角度或水平井筒运行而不损坏油管柱上的设备的方法和装置。 集中器在设备两侧以间隔的间隔安装在油管柱上。 扶正器包括与井筒壳体接触并且被安装为具有很少或没有径向向内运动的球面滚子。

公开(公告)号：WO1994005892A1

公开(公告)日：1994-03-17

申请号：PCT/US1993007866

申请日：1993-08-20

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  COLLINS, Gary, J. ,  BAUGH, John, L. ,  BENKER, Wilhelm, E.

IPC: E21B07/08

CPC classification number: E21B43/017 ,  E21B7/043 ,  E21B7/061 ,  E21B7/068 ,  E21B33/047 ,  E21B41/0035 ,  E21B41/08 ,  E21B43/305

Abstract: A template and process for drilling and completing multiple wells in a subterranean formation. A template having a plurality of axially extending, divergent bores therethrough is secured to surface or intermdiate casing and a like plurality of subterranean wells are drilled through the bores and into the subterranean formation. Each well is separatly cased to the well head at the surface and separate production tubing is inserted into each well. Thus, remedial operations can be carried out in one well or fluid injected into a subterranean formation via one well while fluid, such as hydrocarbons, are simultaneously produced from a subterranean formation via the other well(s).

Abstract translation: 用于在地层中钻取和完成多个井的模板和过程。 具有穿过其中的多个轴向延伸的发散孔的模板被固定到表面或相互干涉的壳体上，并且类似的多个地下井被钻穿过孔并进入地下地层。 每个井分离地套在井表面的井头，并且将分离的生产油管插入每个井中。 因此，补救操作可以在一个井中或通过一个井注入地下地层的流体进行，而诸如烃之类的流体也是通过另一个井从地下地层同时产生的。

公开(公告)号：WO1993010039A1

公开(公告)日：1993-05-27

申请号：PCT/US1992006037

申请日：1992-07-21

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  PLUMMER, Mark, A.

IPC: C01B17/05

CPC classification number: B01D53/52 ,  C01B17/05 ,  Y02E60/364

Abstract: The invention relates to a process for converting hydrogen sulfide to sulfur and hydrogen. The hydrogen sulfide gas is contacted with a quinone in an aqueous solvent containing a sulfur complexing agent to yield sulfur and the corresponding hydroquinone. The hydroquinone is converted back to quinone and hydrogen. The quinone is recycled and the hydrogen gas and sulfur is collected. The invention also discloses a range of ratios of complexing agent to quinone which produces an unexpected yield for the disclosed reaction.

公开(公告)号：WO1993007481A1

公开(公告)日：1993-04-15

申请号：PCT/US1992006076

申请日：1992-07-21

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  ATWOOD, Sonia, E.

IPC: G01N30/02

CPC classification number: G01N30/96 ,  G01N30/02 ,  G01N2030/8859 ,  B01D15/36

Abstract: A method for identification and quantification of sulfonation by-products by ion chromatography. The method utilizes two eluants and preferably three eluants to identify and quantify the by-products on a single chromatographic run.

公开(公告)号：WO1992016478A1

公开(公告)日：1992-10-01

申请号：PCT/US1992000306

申请日：1992-01-07

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  WAYCUILIS, John, J.

IPC: C07C07/144

CPC classification number: C10G31/11 ,  B01D53/228 ,  B01D61/00 ,  B01D63/02 ,  B01D63/10 ,  B01D2319/04 ,  C07C7/144

Abstract: A semi-permeable membrane process of separating impurities from a hydrocarbon mixture. A fuel gas sweep gas is used to purge and dilute the permeate. Because this reduces the partial pressure of the impurities, the driving force for permeation is increased even though the permeate mixture pressure is increased to the extent that the system need not employ a compressor or vacuum pump. The mixture of permeate, fuel gas and permeated hydrocarbon product can be delivered at a pressure sufficient to flow directly to the plant fuel system or other system for use therein. Specific membrane units employing hollow fiber membranes or spirally wound stacked membrane layers are disclosed.

公开(公告)号：WO1992008034A1

公开(公告)日：1992-05-14

申请号：PCT/US1991004710

申请日：1991-07-02

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  TACKETT, James, E., Jr.

IPC: E21B33/138

CPC classification number: C09K8/887 ,  C09K8/512

Abstract: The present invention is a process for selectively plugging high permeability zones of a subterranean hydrocarbon-bearing formation by enhancing the delay associated with the in situ formation of a polymer gel. The process comprises predetermining a gelation delay time based on a formation's temperature, permeability and porosity, the distance from the well bore a region to be plugged is located, and a volumetric rate of gelation fluid injection. A gelation solution is then prepared comprising polyacrylamide a polyvalent metal carboxylate crosslinking agent, a gelation delaying agent and a buffer with a pKa of about 3.5 to about 6.8. Gelation delays are achieved by selecting the polyacrylamide concentration, delaying agent concentration and type, and buffer concentration and type, for given formation conditions. Delay times can range from several hours to several weeks at formation temperatures near 176 °F (80 °C) and from several hours to about one day at formation temperature above about 219 °F (104 °C). The prepared solution is then injected into the formation via a well bore and allowed to gel. The gel selectively plugs high permeability zones within a subterranean hydrocarbon-bearing formation, at temperatures and distances from the well formerly unobtainable, resulting in improved vertical or areal conformance of injected fluids and improved oil production.

公开(公告)号：WO1991001431A1

公开(公告)日：1991-02-07

申请号：PCT/US1990002799

申请日：1990-05-22

Applicant: MARATHON OIL COMPANY

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

IPC: E21B43/00

CPC classification number: C09K8/887 ,  C09K8/035 ,  C09K8/24 ,  C09K8/512

Abstract: A flowing crosslinked polymer gel is employed as a kill fluid or as an additive to a kill fluid in a process for preventing the intrusion of formation fluid into a wellbore while minimizing wellbore fluid leakoff in the formation during conventional oil field operations in the wellbore. The gel comprises a carboxylate-containing polymer and a chromic carboxylate crosslinking agent.

公开(公告)号：WO1991001430A2

公开(公告)日：1991-02-07

申请号：PCT/US1990002899

申请日：1990-05-22

Applicant: MARATHON OIL COMPANY

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

IPC: E21B0

CPC classification number: C09K8/887 ,  E21B21/003

Abstract: A flowing crosslinked polymer gel is employed as a lost circulation fluid in a process for reducing lost circulation during an oil field drilling operation. The lost circulation fluid comprises a carboxylate-containing polymer, a chromic carboxylate crosslinking agent, and an aqueous solvent.

Abstract translation: 交联流体聚合物凝胶在石油钻探操作期间用作减少循环流体损失的过程中的循环液体。 该漏失液体包含含羧酸盐的聚合物，交联的铬化剂和水性溶剂。

公开(公告)号：WO1989012267A1

公开(公告)日：1989-12-14

申请号：PCT/US1989001324

申请日：1989-03-30

Applicant: MARATHON OIL COMPANY

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

IPC: G05D16/06

CPC classification number: F16K7/17 ,  Y10S137/906 ,  Y10T137/7836 ,  Y10T137/7895

Abstract: A back pressure regulator of the diaphragm type. A metal diaphragm is held in a cavity formed by opposed faces of top and bottom portions of the unit. The opposed faces are tapered so that the depth of the cavity is greatest in the central portion of the diaphragm, allowing for movement of the diaphragm. A fluid outlet leading into the cavity at the underside of the diaphragm is sealed by contact of the underside of the diaphragm with an O-ring which surrounds the fluid outlet and extends into the cavity. When the pressure of the fluid in the cavity above the diaphragm is greater than the pressure of the fluid beneath the diaphragm the diaphragm is maintained in contact with the O-ring to prevent flow through the outlet.