Exxonmobil Upstream Research Company

Marquette University

Uwm Research Foundation, Inc.

Wisconsin Alumni Research Foundation

Rasgas Company Limited

University of Wisconsin-milwaukee Research Foundation

David A Baker

James M Cook

Wenyuan Yin

Edward Merle Johnson, Ii

Bruce A Dale

James Karl Powers

John W Mohr

Mark W Biegler

Ismail Ceyhan

Jason A Burdette

Marcus Asmann

A S David Khemakhem

James H Myers

Charles S Yeh

Pavlin B Entchev

William A Sorem

Zhen Li

Brian J Fielding

Timothy D Anderson

John K Montgomery

Dennis H Petrie

Stefanie Lynn Asher

Ranjit Singh Verma

Deborah Jean Davis

Venkat R Krishnan

Neerav Verma

Larry Mercer

Zhihua Wang

Michael S Chelf

Astrid-Cecilie Alveid Haarseth

Sushil K Mandot

As David Khemakhem

Edward Merle Johnson

Edward Merle Ii Johnson

AS David Khemakhem

A method of conveying a production fluid from an offshore subsea well to an offshore vessel includes deploying an inflatable bladder from the offshore vessel, the inflatable bladder including a bladder valve, and fluidly connecting the inflatable bladder to an offloading port positioned at a seafloor, wherein the offloading port includes a port valve and is in fluid communication with one or more subterranean hydrocarbon-bearing formations. The method further includes opening the bladder and port valves to discharge the production fluid from the offloading port into the inflatable bladder, and thereby resulting in a substantially filled bladder, closing the bladder and port valves, and fluidly disconnecting the substantially filled bladder from the offloading port.

Riserless offshore production and storage system and related methods

Conduit system for conveying fluids is described. The conduit system comprises a conduit, a tubular, and a sealing component. The tubular is positioned radially interior of an inner surface of the conduit along a length. The tubular comprises a polymeric material. The sealing component is positioned proximate the distal end of the tubular in an annulus formed between an outer surface of the tubular and the inner surface of the conduit, the sealing component constructed and arranged to seal the annulus. Methods for reducing corrosion of or providing pressure integrity to a conduit are also described.

Conduit system and method of use thereof

Systems and methods for managing pressures present in an annular space defined between casing strings contained within a subterranean well. These systems and methods may include providing a pressure distribution casing that includes a plurality of pressure distribution passages and distributing fluids present within the annular space along a length of the pressure distribution casing and/or between the annular space and the subterranean formation using a portion of the plurality of pressure distribution passages. Pressure distribution passages may be present on an inner surface of the pressure distribution casing, on an outer surface of the pressure distribution casing, and/or within a wall of the pressure distribution casing and may distribute the fluids along the length of the pressure distribution casing without distributing the fluids across and/or through a wall of the pressure distribution casing, such as between the inner surface and the outer surface of the pressure distribution casing.

Systems and methods for managing pressures in casing annuli of subterranean wells

A bridge plug arrangement includes a plug having an upper end and a bottom end. The bridge plug arrangement also optionally includes a cylindrical seat. The bridge plug arrangement further includes a tubular member. The tubular member may be part of a casing string. The tubular member is configured to receive the plug and, when used, the seat. The plug and/or the seat may be fabricated from a frangible material. Also disclosed is a method for diverting fluids in a wellbore using the bridge plug arrangement. The method may include landing the plug onto the seat within the wellbore below a subsurface zone of interest. Treatment fluids are then injected into the wellbore, where they are diverted through perforations and into a formation. The plug and/or seat is then optionally broken into a plurality of pieces through use of a downward mechanical force.

Systems and methods of diverting fluids in a wellbore using destructible plugs

A method associated with the selection of tubulars for hydrocarbon production is described based upon evaluating the performance limits of threaded connections. Constituents of an evaluation group of threaded connections are determined and then a first group of the connections is evaluated via model analysis over a range of conditions. Then, physical testing on a first group of threaded connections in the evaluation group is conducted over that range of conditions. Once modeled, the results from the physical testing and the modeling analysis of the first group are compared to assess a characteristic performance factor for the first group. A second group of threaded connections are determined and the assessed performance factor from the first group is applied to a second group, and the performance limits of the second group are defined over the range of conditions based on this characteristic performance factor, without requiring testing the second group.

Method and system for evaluating groups of threaded connections

The present invention provides cysteine and cystine bioisosteres for the treatment of schizophrenia and drug addiction. The invention further encompasses pharmaceutical compositions containing such bioisosteres and methods of using the bioisosteres for treatment of schizophrenia and drug addiction.

Cysteine and cystine bioisosteres to treat schizophrenia and reduce drug cravings

The present invention discloses cysteine prodrugs having the general formula: cystine dimers of the cysteine prodrugs having the general formula: protected cysteine analogs having the general formula: and dimers of the protected cysteine analogs having the general formula:  The invention further encompasses pharmaceutical compositions containing the disclosed prodrugs, dimers, and analogs, and methods of using such compounds for treatment of schizophrenia and drug addiction.

Cysteine and cystine prodrugs to treat schizophrenia and reduce drug cravings

A method associated with the selection of tubulars for hydrocarbon production is described. In particular, the method is associated with the evaluation of performance limits of threaded connections. In this method, constituents of an evaluation group of threaded connections are determined via model analysis. Then, physical testing on a first group of threaded connections in the evaluation group is conducted. Modeling analysis on the first group and a second group of threaded connections is performed, wherein the second group are not physically tested. Once modeled, the results from the physical testing and the modeling analysis are compared to assess a characteristic performance factor for the first group. Then, the characteristic performance factor is applied to the second group, and the performance limits are defined based on this characteristic performance factor.

The present invention provides cysteine prodrugs for the treatment of schizophrenia and drug addiction. The invention further encompasses pharmaceutical compositions containing prodrugs and methods of using the prodrugs and compositions for treatment of schizophrenia and drug addiction.

Cysteine prodrugs to treat schizophrenia and drug addiction

The present invention provides cysteine and cystine prodrugs for the treatment of schizophrenia and drug addiction. The invention further encompasses pharmaceutical compositions containing prodrugs and methods of using the prodrugs and compositions for treatment of schizophrenia and drug addiction. Exemplary prodrugs include the cysteine compound having the formula as well as cystine dimers thereof.

Growing community of inventors

Bellaire, TX, United States of America

David A Baker