公开(公告)号：WO1992002708A1

公开(公告)日：1992-02-20

申请号：PCT/US1991002875

申请日：1991-04-26

Applicant: MARATHON OIL COMPANY

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

IPC: E21B33/138

CPC classification number: C09K8/94 ,  C09K8/518 ,  Y10S507/903 ,  Y10S507/935 ,  Y10S507/936

Abstract: A foam is provided having utility for improving sweep efficiency in subterranean oil-bearing formations and having specific utility for conformance improvement treatments and mobility control in such formations. The foam is a gel medium having a gas dispersed therein. The gel medium is made up of a crosslinkable polymer, a crosslinking agent, a surfactant and a liquid solvant.

公开(公告)号：WO1991010042A1

公开(公告)日：1991-07-11

申请号：PCT/US1990004933

申请日：1990-08-30

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  HAINES, Hiemi, K. ,  CHRISTIANSEN, Richard, L.

IPC: E21B43/22

CPC classification number: C09K8/58 ,  E21B43/40

Abstract: A process for enriching a drive gas with intermediate hydrocarbon compounds to enhance the ability of the gas to mobilize hydrocarbons within a subterranean hydrocarbon-bearing formation. The drive gas is contacted with oil containing intermediate hydrocarbons under conditions such that the gas strips intermediate hydrocarbons from the oil. The drive gas may be further enriched upon contacting the gas with stripped oil which has been enriched with intermediate hydrocarbons under conditions such that the gas strips intermediate hydrocarbons from the enriched stripped oil.

公开(公告)号：WO1991010040A1

公开(公告)日：1991-07-11

申请号：PCT/US1990004964

申请日：1990-08-30

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  HAINES, Hiemi, K.

IPC: E21B43/00

CPC classification number: E21B43/40 ,  E21B43/164 ,  E21B43/168

Abstract: A process for in-situ enrichment of gas used in miscible flooding in a subterranean hydrocarbon-bearing reservoir. A drive gas such as methane, lean natural gas, nitrogen, carbon dioxide or mixtures thereof is used to immiscibly displace formation hydrocarbons. After gas breakthrough the produced fluid is separated into oil and gas components. The separated gas, which has been enriched with intermediate hydrocarbon compounds extracted from the formation hydrocarbons, is mixed with the drive gas injected into the reservoir so as to enrich the injected gas sufficiently to cause miscible displacement of the formation hydrocarbons. When the drive gas is carbon dioxide, methane and/or nitrogen may be extracted from the separated gas prior to being mixed with the drive gas.

公开(公告)号：WO1989008220A1

公开(公告)日：1989-09-08

申请号：PCT/US1989000478

申请日：1989-02-07

Applicant: MARATHON OIL COMPANY ,  LUNT, Walter, R.

Inventor： MARATHON OIL COMPANY

IPC: F16L59/06

CPC classification number: F16L59/07

Abstract: A coated pipe (4) having a first coating layer (5) comprising a thermally stable polyurethane elastomer, and a second coating layer (2) comprising a matrix of polyurethane elastomer having dispersed therein a plurality of discrete hollow units (3).

公开(公告)号：WO1989007698A1

公开(公告)日：1989-08-24

申请号：PCT/US1988004227

申请日：1988-11-28

Applicant: MARATHON OIL COMPANY

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

IPC: E21B33/138

CPC classification number: C09K8/512

Abstract: A process for treating a region in a high-temperature hydrocarbon-bearing formation with a gel for hydrocarbon recovery applications. The gel is prepared by mixing a single aqueous gelation system at the surface comprising a solution of a polyvalent metal crosslinking agent and an unhydrolyzed acrylamide polymer. The system is injected into a desired treatment region of the high-temperature formation wherein the polymer is hydrolyzed in situ. The gelation system is then gelled to completion in the treatment region.

公开(公告)号：WO1988004718A1

公开(公告)日：1988-06-30

申请号：PCT/US1987002453

申请日：1987-09-28

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  SYDANSK, Robert, D. ,  IBELE, Lyndon, C.

IPC: E21B33/13

CPC classification number: C09K8/512 ,  E21B7/046 ,  E21B43/305

Abstract: An uncased wellbore penetrating a subterranean hydrocarbon-bearing formation is sealed by forming a gel at the open wellbore face comprising a high molecular weight, water-soluble carboxylate-containing polymer and a chromic carboxylate complex crosslinking agent. The gel components are combined at the surface and injected into the wellbore to form the continuous single-phase gel in situ.

公开(公告)号：WO1987004246A1

公开(公告)日：1987-07-16

申请号：PCT/US1986002120

申请日：1986-10-09

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  JONES, Stanley, C.

IPC: G01N15/08

CPC classification number: G01N15/0826 ,  G01N15/088

Abstract: A system and method for measuring Klinkenberg permeability and pore volume of a tight core plug sample (70) wherein a pressure transducer (50) is positioned between the sample cell (60) and the manifold (40) of the system.

公开(公告)号：WO1987001808A1

公开(公告)日：1987-03-26

申请号：PCT/US1986001183

申请日：1986-06-02

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  CHRISTIANSEN, Richard, L.

IPC: G01N33/28

CPC classification number: G01N33/2823

Abstract: A method of determining the minimum level of enrichment required to render a substantially miscible gas miscible in a liquid hydrocarbon by observing the behavior of liquid hydrocarbon droplets as they fall through samples of enriched gas of incrementally increasing levels of enrichment. The lowest level of enrichment at which the droplet is observed to dissipate in the enriched gas is the minimum level of enrichment.

公开(公告)号：WO1983002343A1

公开(公告)日：1983-07-07

申请号：PCT/US1982001234

申请日：1982-09-10

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  BEITEL, James, Ellery ,  BRUCE, Charles, Robert ,  COOK, Gary, Richard ,  MOSIER, Charles, Francis, Jr. ,  SARTORE, Edward, Lee

IPC: G06F03/04

CPC classification number: G06F21/31

Abstract: System for securing the access of a remote computer terminal (130) to a centrally located host computer (300). The system includes a first security circuit (200) interconnected with a calling telephone (100), a calling modem (110), and the remote computer terminal (130) at the remote location for automatically dialing the number of the called telephone (310) at the location of the central host computer ((300). A second security circuit (350) is located at the central host computer (300) and is interconnected with the called telephone (130), the called modem (330), and the central host computer (300). Upon receipt of the user identification code, the second security circuit (350) compares the user identification code with a stored code and, if verified, sends an acknowledgment signal back to the first security circuit (200). At this time, the two security circuits (200 and 350) activate respective solid state switches (260 and 370) to interconnect the host computer (300) with the remote computer terminal (130). A portable memory module (240) is selectively insertable in the first security circuit to selectively activate and deactivate the first security circuit and which contains the secret phone number of the called telephone (310) at the host computer (300) as well as the secret user identification code.

Abstract translation: 用于保护远程计算机终端（130）到中心位置的主计算机（300）的访问的系统。 该系统包括与主叫电话（100），主叫调制解调器（110）和远程计算机终端（130）互连的第一安全电路（200），用于自动拨打被叫电话（310）的号码， 在中央主机（300）的位置处，第二安全电路（350）位于中央主计算机（300）处，并与被叫电话（130），被叫调制解调器（330）互连，并且 所述第二安全电路（350）在接收到所述用户识别码时，将所述用户识别码与存储的码进行比较，并且如果被验证，则将确认信号发回所述第一安全电路（200）。 此时，两个安全电路（200和350）激活相应的固态开关（260和370）以将主计算机（300）与远程计算机终端（130）互连。便携式存储器模块（240）可选择性地插入 在第一个安全环路 t选择性地激活和去激活第一安全电路，并且其包含主计算机（300）处的被叫电话（310）的秘密电话号码以及秘密用户识别码。