Designing service for wellbores with fluid losses

Patent metadata

Field	Value
Publication number	US-12321673-B2
Application number	US-202117551881-A
Country	US
Kind code	B2
Filing date	Dec 15, 2021
Priority date	Dec 15, 2021
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

Methods and systems are provided for designing and determining a well service in the presence of loss, including the volume, rates, and duration of pumping of fluids in the presence of losses. A method of designing services for wellbores includes calibrating a loss circulation model with input comprising wellbore state to update the loss circulation model with formation loss zone characteristics; applying the loss circulation model to output at least a prediction of loss rate; and designing a wellbore service at least partially based on the prediction of the loss rate.

First claim

What is claimed is:

1. A method of designing services for wellbores, comprising:
calibrating a loss circulation model with input comprising wellbore state to update the loss circulation model with formation loss zone characteristics;
applying the loss circulation model to output at least a prediction of loss rate wherein the loss circulation model utilizes model for determining loss rate ({dot over (Q)}) of the form;
{dot over (Q)}=f (differential pressure,fracture geometry characteristics,rheology,well geometry); and

designing a wellbore service based on the prediction of the loss rate, wherein the wellbore service comprises a fluid train comprising a plurality of fluids;
preparing the fluid train; and
introducing the fluid train into a wellbore.

2. The method of claim 1 , wherein the designing the wellbore service comprises determining a fluid volume, and wherein the method further comprising pumping the fluid volume into a wellbore.

3. The method of claim 1 , wherein the designing the wellbore services comprises determining a volume of a cement composition and/or a volume of a spacer fluid.

4. The method of claim 1 , wherein the wellbore state comprises at least one wellbore characteristic selected from the group consisting of wellbore geometry, a wellbore condition, and wellbore trajectory.

5. The method of claim 1 , wherein the wellbore state comprises loss circulation information for a prior-run fluid, wherein the loss circulation information comprises a historical loss rate.

6. The method of claim 5 , wherein the historical loss rate is a function if time and depth.

7. The method of claim 1 , wherein the wellbore state comprises a loss mechanism.

8. The method of claim 1 , wherein the formation loss zone characteristics comprise at least one formation loss zone characteristic selected from the group consisting of a fracture parameter, a pore throat parameter, permeability, tortuosity, porosity, and combinations thereof.

9. The method of claim 1 , wherein the formation loss zone characteristics comprise at least one fracture parameter selected from the group consisting of fracture width, a fracture opening dimension, a fracture length, fracture connectivity, and combinations thereof.

10. The method of claim 1 , wherein the loss circulation model assumes a fracture extending from a wellbore accepting loss of a fluid is a natural fracture, wherein the loss circulation model utilizes an equation for determining loss rate ({dot over (Q)}) of the form:

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Assignees

• Halliburton Energy Services Inc

Inventors

• Singh John Paul Bir
• Jandhyala Siva Rama Krishna
• Yerubandi Krishna Babu
• Morgan Ronnie Glen

Classifications

• E21B33/138

  Plastering the borehole wall; Injecting into the formation · CPC title

• G06F2113/08

  Fluids · CPC title

• E21B2200/20

  Computer models or simulations, e.g. for reservoirs under production, drill bits · CPC title

• E21B49/00

  Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells · CPC title

• E21B47/04

  Measuring depth or liquid level · CPC title