Landmark Graphics Corporation

Halliburton Energy Services, Inc.

Robert Franklin Mitchell

Adolfo Gonzales

Ronald Earl Sweatman

Yongfeng Kang

Jun Jiang

Max Orland Duncan

Adolfo Camilo Gonzales

Systems and methods for determining stresses in pipe under non-uniform exterior loads to test the pipe design for structural integrity by approximating non-uniform exterior loads on the pipe and performing a stress analysis of the pipe under the non-uniform exterior loading to determine the stresses in the pipe.

Determining stresses in a pipe under non-uniform exterior loads

Systems and methods for the advance, real-time and/or post-event evaluation of inaccessible passive pressure containment barriers using an iterative process.

Systems and methods for the evaluation of passive pressure containment barriers

Systems and methods for determining pressure within a sealed annulus based on the conservation of mass to test the structural integrity of the sealed annulus. The conservation of mass is applied to fluid(s) in a sealed annulus by using the total mass of the fluid(s) in the sealed annulus, instead of volume changes, as the basis for estimating pressure changes due to temperature changes.

Determining pressure within a sealed annulus

A casing joint assembly and methods for producing an annulus gas cap using the casing joint assembly. The casing joint assembly comprises a first valve and a second valve to control fluid pressure in the sealed annulus between the casing string and a wall of the well bore or another casing string.

Casing joint assembly for producing an annulus gas cap

A method performed with a computing system for determining well integrity includes receiving a selection of a well configuration of a well, and receiving a selection of a wellbore operation performed with the well configuration. The selected well configuration includes one or more casing strings and a production tubing extending from adjacent a wellhead of the well to adjacent a bottom of the well. In some examples, the method further includes determining, based on the well configuration and the wellbore operation, a characteristic of the well at or adjacent the one or more casing strings and the production tubing during the wellbore operation, and modifying the well configuration to remove the production tubing. In some examples, the method still further includes determining, based on the modified well configuration and the wellbore operation, the characteristic of the well at or adjacent the one or more casing strings during the wellbore operation.

Determining well integrity

A method for simulating downhole conditions is described. The method includes receiving configuration information about a well system in a production configuration, the well system including annular fluids disposed therein and receiving heat source information associated with a heat source disposed within the well system. The method also includes simulating temperature transfer in the well system during a production scenario based at least on the configuration information and the heat source information and predicting pressure buildup in the annular fluids based on the simulated temperature transfer in the well system.

System and method for simulation of downhole conditions in a well system

Systems and related methods to simulate, predict, and report progressive failures of rupture disks in response to thermal expansion of trapped annular fluids.

System, method and computer program product to simulate the progressive failure of rupture disks in downhole environments

Systems and related methods to simulate the use of rupture disks and syntactic foam in the mitigation of trapped annular pressure and wellhead movement during downhole operations.

System, method and computer program product to simulate rupture disk and syntactic foam trapped annular pressure mitigation in downhole environments

Systems and methods for determining the bending moment and shear force of tubing and casing when the tubing buckles and contacts the casing.

Systems and methods for determining the moments and forces of two concentric pipes within a wellbore

Systems and methods for modeling wellbore trajectories, which can be used to model corresponding drillstring trajectories and transform the torque-drag drill string model into a full stiff-string formulation.

Systems and methods for modeling wellbore trajectories

Methods and computer-readable media are provided for determining design parameters for oil well casing and tubing to prevent buckling in deviated wellbores. Well parameter data including tubing size, tubing weight, well depth, and well geometry is obtained and may be utilized to calculate parameters for predicting the movement of tubing near a packer or centralizer in the deviated wellbore based on the received well parameter data, predicting a total bending moment near the packer or centralizer, predicting a maximum bending stress near the packer or centralizer based on the total bending moment, and predicting the minimum axial force necessary to initiate buckling due to friction, and predicting the onset of buckling for the connection of tubing of different sizes. After the parameters have been calculated, they may be utilized in the design of the oil well casing and tubing to prevent buckling in the deviated wellbore.

Growing community of inventors

Houston, TX, United States of America

Robert Franklin Mitchell