US 2022/0178243 A1Published application

Integrated thermal and stress analysis for a multiple tubing completion well

AssigneeLandmark Graphics Corporation

InventorsYongfeng Kang, Adolfo Gonzales, Robello Samuel, Zhengchun Liu, Jun Jiang, Max O. Duncan

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Abstract

A well operation simulator predicts temperature and pressure profiles of a multi-tubing completion well for well design. The simulator is comprised of modules, which when executed, determine a first set of design limits based on stress conditions arising from the temperature and pressure profiles from a multi-tubing drilling module and a multi -tubing production module for drilling and production operations. A multi-tubing multi-string module predicts the annular fluid expansion (AFE) and annular pressure buildup (APB) of the multi-tubing well from the previously calculated temperature profile, pressure profile, and stress conditions and determines a second set of design limits with the AFE/APB effects in addition to the temperature profile and pressure profile predicted from multi-tubing drilling module and multi-tubing production module. The first and second sets of design limits are depicted using one or

Claims20

Dependent claims

A method comprising:

simulating a production operation for a described well with multiple tubings to determine a production temperature profile and a production pressure profile for the described well based on a flow path of each tubing, shared annulus fluid, and tubing surface-based heating coefficient of each tubing;
for each of the multiple tubings, determining a production pressure profile and a production temperature profile based, at least in part, on the production and temperature profiles for the described well;
performing a stress simulation based on the production temperature and pressure profiles of the multiple tubings to predict stress state of the described well;
determining a first set of design limitations of the described well based on:
the predicted stress state of the multiple tubings, one or more casings of the described well, or combinations thereof;
simulating a drilling operation for the described well to determine a drilling temperature profile and a drilling pressure profile for the described well;
determining a trapped annular pressure buildup property and a trapped annular fluid expansion property for each annulus in a plurality of annuli located between an inner string and one or more outer casings of the described well based on the temperature and pressure profiles;
and
determining a second set of design limitations of the described well with the effects of the trapped annular pressure buildup conditions and the trapped annular fluid expansion conditions.

6 more elements

A system comprising:

a processor;
and
a machine-readable medium having instructions stored thereon that are executable by the processor to cause the system to,
generate temperature and pressure profiles of elements of a well comprising multiple production tubings based on a set of well design parameters, wherein the instructions to generate the temperature and pressure profiles comprise instructions to simulate multi-tubing heat flow and to simulate interactions amongst at least a tubing annulus fluid shared by multiple production tubings, each of the multiple production tubings, and an inner tubular string containing the multiple production tubings within,
to determine a first set of design limitations of the well based on the temperature and pressure profiles of the elements of a well;
to determine a trapped annular pressure buildup property and a trapped annular fluid expansion property for each annulus in a plurality of annuli located between an inner string and one or more outer casings of the well based on the temperature and pressure profiles;
and
to determine a second set of design limitations of the well with the effects of the trapped annular pressure buildup conditions and the trapped annular fluid expansion conditions.

5 more elements

A non-transitory, computer-readable medium having instructions stored thereon that are executable by a computing device to perform operations comprising:

generating temperature and pressure profiles of elements of a well comprising multiple production tubings based on a set of well design parameters, wherein generating the temperature and pressure profiles comprises simulating multi-tubing heat flow and simulating interactions amongst at least a tubing annulus fluid shared by multiple production tubings, each of the multiple production tubings, and an inner tubular string containing the multiple production tubings within;
determining a first set of design limitations from stress analysis of the well based on the temperature and pressure profiles of the elements of the well;
determining a trapped annular pressure buildup property and a trapped annular fluid expansion property for each annulus in a plurality of annuli located between an inner string and one or more outer casings of the well based on the temperature and pressure profiles;
and
determining a second set of design limitations of the well with the effects of the trapped annular pressure buildup conditions and the trapped annular fluid expansion conditions.

2 more elements

Dependencies are inferred from the claim text.