Method and analysis for holistic casing design for planning and real-time

Patent metadata

Field	Value
Publication number	US-2016203239-A1
Application number	US-201314894981-A
Country	US
Kind code	A1
Filing date	Sep 30, 2013
Priority date	Sep 30, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

The disclosed embodiments include a method, apparatus, and computer program product for determining a suitable casing design for a well. For example, one disclosed embodiment includes a system that includes at least one processor and at least one memory coupled to the at least one processor and storing instructions that when executed by the at least one processor performs operations for receiving historical data associated with previously drilled wells; in response to a determination that the historical data associated with previously drilled well is relevant to the well, generating a first set of casing designs using a probabilistic approach and generating a second set of casing designs using a combination approach that combines the probabilistic approach with a deterministic approach; and selecting a suitable casing design from a resulting set of casing designs.

First claim

1 . A computer-implemented method for determining a suitable casing design for a well, the method comprising:
receiving historical data associated with previously drilled wells; determining whether the historical data associated with the previously drilled wells is relevant to the well; in response to a determination that the historical data associated with previously drilled well is relevant to the well, generating a first set of casing designs using a probabilistic approach and generating a second set of casing designs using a combination approach, wherein the combination approach combines the probabilistic approach with a deterministic approach; and selecting the suitable casing design from a resulting set of casing designs, wherein the resulting set of casing designs includes the first set of casing designs and the second set of casing designs.

2 . The computer-implemented method of claim 1 , further comprising generating a third set of casing designs using the deterministic approach, and wherein the resulting set of casing design includes the third set of casing designs.

3 . The computer-implemented method of claim 2 , wherein determining the suitable casing design for the well is performed during a planning stage of the well.

4 . The computer-implemented method of claim 2 , wherein determining the suitable casing design for the well is performed during a drilling stage of the well.

5 . The computer-implemented method of claim 4 , further comprising:
receiving real-time data during the drilling stage of the well; determining whether the real-time data is relevant to determining the suitable casing design for the well; and in response to a determination that the real-time data is relevant to determining the suitable casing design for the well, updating the first set of casing designs that used the probabilistic approach and updating the second set of casing designs that used the combination approach.

6 . The computer-implemented method of claim 1 , wherein the probabilistic approach generates casing designs using a data match factor, a probability of failure, and a consequence of failure.

7 . The computer-implemented method of claim 6 , wherein generating the data match factor comprises comparing a set of parameters from a previously drilled well to that of the well, and wherein parameters within the set of parameters are assigned a weighting factor.

8 . The computer-implemented method of claim 7 , wherein the weighting factor for a parameter associated with the previously drilled well is determined using artificial intelligence.

9 . The computer-implemented method of claim 2 , wherein the deterministic approach generates casing designs using engineering calculations and accounts for design safety factors.

10 . The computer-implemented method of claim 9 , wherein the design safety factors include an estimated wellhead movement, an estimated pressure buildup, and an estimated corrosion of the well.

11 . A non-transitory computer readable medium comprising computer executable instructions for determining a suitable casing design for a well, the computer executable instructions when executed causes one or more machines to perform operations comprising:
receiving historical data associated with previously drilled wells; determining whether the historical data associated with the previously drilled wells is relevant to the well; generating a first set of casing designs using a probabilistic approach and generating a second set of casing designs using a combination approach in response to a determination that the historical data associated with previously drilled well is relevant to the well, wherein the combination approach combines the probabilistic approach with a deterministic approach; and selecting the suitable casing design from a resulting set of casing designs, wherein the resulting set of casing designs includes the first set of casing designs and the second set of casing designs.

12 . The computer readable medium of claim 11 , wherein the operations further comprises generating a third set of casing designs using the deterministic approach, and wherein the resulting set of casing design includes the third set of casing designs.

13 . The computer readable medium of claim 12 , wherein the operations further comprises determining the suitable casing design for the well is executed during a drilling stage of the well.

14 . The computer readable medium of claim 13 , wherein the operations further comprises:
receiving real-time data during the drilling stage of the well; determining whether the real-time data is relevant to determining the suitable casing design for the well; and in response to a determination that the real-time data is relevant to determining the suitable casing design for the well, updating the first set of casing designs using the probabilistic approach and updating the second set of casing designs using the combination approach.

15 . The computer readable medium of claim 14 , wherein the probabilistic approach generates casing designs using a data match factor, a probability of failure, and a consequence of failure, wherein generating the data match factor comprises comparing a set of parameters from a previously drilled well to that of the well, wherein parameters within the set of parameters are assigned a weighting factor, and wherein the weighting factor for a parameter associated with the previously drilled well is dynamically updated based on the real-time data.

16 . A system, comprising:
at least one processor; and at least one memory coupled to the at least one processor and storing instructions that when executed by the at least one processor performs operations comprising:
receiving historical data associated with previously drilled wells;
determining whether the historical data associated with the previously drilled wells is relevant to the well;
in response to a determination that the historical data associated with previously drilled well is relevant to the well, generating a first set of casing designs using a probabilistic approach and generating a second set of casing designs using a combination approach, wherein the combination approach combines the probabilistic approach with a deterministic approach; and
selecting a suitable casing design from a resulting set of casing designs, wherein the resulting set of casing designs includes the first set of casing designs and the second set of casing designs.

17 . The system of claim 16 , wherein the operations further comprises generating a third set of casing designs using the deterministic approach, and wherein the resulting set of casing design includes the third set of casing designs.

18 . The system of claim 16 , wherein the operations further comprises:
receiving real-time data during a drilling stage of the well; determining whether the real-time data is relevant to determining the suitable casing design for the well; and in response to a determination that the real-time data is relevant to determining the suitable casing design for the well, updating the first set of casing designs using the probabilistic approach and updating the second set of casing designs using the combination approach.

19 . The system of claim 16 , wherein the probabilistic approach generates casing designs using a data match factor, a probability of failure, and a consequence of failure.

20 . The system of claim 16 , wherein generating the data match factor comprises comparing a set of parameters from a pre

Assignees

• Landmark Graphics Corp

Inventors

• Samuel Robello
• Chaudhari Nitish
• Kumar Aniket

Classifications

• E21B47/00 Primary

  Survey of boreholes or wells (monitoring pressure or flow of drilling fluid E21B21/08) · CPC title

• E21B43/10 Primary

  Setting of casings, screens, liners {or the like} in wells · CPC title

• E21B49/003

  by analysing drilling variables or conditions (E21B49/005 takes precedence; systems specially adapted for monitoring a plurality of drilling variables or conditions E21B44/00) · CPC title

• G06F2111/08

  Probabilistic or stochastic CAD · CPC title

• G06F30/00 Primary

  Computer-aided design [CAD] · CPC title