Well fracturing systems and methods

Patent metadata

Field	Value
Publication number	US-9222345-B2
Application number	US-201414493001-A
Country	US
Kind code	B2
Filing date	Sep 22, 2014
Priority date	Jan 11, 2012
Publication date	Dec 29, 2015
Grant date	Dec 29, 2015

Abstract

A fracturing system can include a fracturing manifold coupled to a plurality of fracturing trees. The fracturing manifold may include adjustment joints that enable adjustment of the length of the fracturing manifold. The fracturing manifold can also include pivot joints that allow angular displacement of portions of the fracturing manifold with respect to other portions. The adjustment and pivot joints can accommodate spacing and elevation differences between the fracturing trees.

First claim

The invention claimed is:

1. A fracturing system, comprising:
a plurality of well fracturing trees; and
a fracturing manifold coupled to each of the plurality of well fracturing trees, wherein the fracturing manifold includes at least one adjustment joint that enables variation in the length of the fracturing manifold to accommodate variation in the distance between well fracturing trees of the plurality of well fracturing trees, and wherein the fracturing manifold includes at least one pivot joint and the fracturing manifold is coupled to a plurality of valves that enable individual control of flow of fracturing fluids from the fracturing manifold to the plurality of well fracturing trees.

2. The system of claim 1 , wherein the plurality of well fracturing trees bear at least a portion of the weight of the fracturing manifold.

3. The system of claim 1 , wherein the fracturing manifold includes a plurality of connection blocks and a plurality of pipe sections.

4. The system of claim 3 , wherein each of the plurality of well fracturing trees is coupled to the fracturing manifold via a respective connection block of the plurality of connection blocks.

5. The system of claim 1 , wherein the at least one pivot joint enables a first portion of the fracturing manifold to be positioned at an angle with respect to a second portion of the fracturing manifold to accommodate variation in spacing between well fracturing trees of the plurality of well fracturing trees.

6. The system of claim 1 , wherein the at least one pivot joint enables a first portion of the fracturing manifold to be positioned at an angle with respect to a second portion of the fracturing manifold to accommodate elevation differences between well fracturing trees of the plurality of well fracturing trees.

7. The system of claim 1 , wherein the at least one pivot joint includes at least one ball joint.

8. A fracturing system, comprising:
a well fracturing tree;
a fracturing manifold coupled to the well fracturing tree by one or more valves of the well fracturing tree to enable flow of fracturing fluid from the fracturing manifold to the well fracturing tree via the one or more valves; and
at least one additional well fracturing tree coupled to the fracturing manifold by one or more additional valves of the at least one additional well fracturing tree;
wherein each well fracturing tree is coupled to a shared trunk line of the fracturing manifold and the shared trunk line includes a plurality of wellhead crosses and pipes extending between the plurality of wellhead crosses.

9. The fracturing system of claim 8 , wherein the shared trunk line is configured to enable adjustments to the length and angular position of one or more portions of the shared trunk line.

10. The fracturing system of claim 8 , wherein the fracturing manifold does not include a skid that supports one or more of the wellhead crosses of the fracturing manifold.

11. A method, comprising:
coupling a fracturing manifold to a first well fracturing tree to enable routing of fracturing fluid from the fracturing manifold to the first well fracturing tree;
coupling the fracturing manifold to a second well fracturing tree adjacent to the first well fracturing tree to enable routing of fracturing fluid from the fracturing manifold to the second well fracturing tree, wherein coupling the fracturing manifold to the first and second well fracturing trees includes coupling the fracturing manifold to valves that enable individual control of flow of fracturing fluids from the fracturing manifold to the first and second well fracturing trees; and
varying the length of the fracturing manifold by manipulating an adjustment joint of the fracturing manifold, wherein the fracturing manifold includes at least one pivot joint.

12. The method of claim 11 , wherein coupling the fracturing manifold to the first well fracturing tree includes coupling a connection block of the fracturing manifold to a gate valve of the first well fracturing tree.

13. The method of claim 11 , comprising fracturing a well with fracturing fluid provided from the fracturing manifold through the first or second well fracturing tree.

14. A fracturing system, comprising:
a plurality of well fracturing trees; and
a fracturing manifold coupled to each of the plurality of well fracturing trees, wherein the fracturing manifold includes at least one pivot joint and the at least one pivot joint enables a first portion of the fracturing manifold to be positioned at an angle with respect to a second portion of the fracturing manifold to accommodate variation in spacing and elevation differences between well fracturing trees of the plurality of well fracturing trees.

Assignees

• Cameron Int Corp

Inventors

• Conrad Gregory A

Classifications

• E21B17/02

  Couplings; joints {(expandable couplings or joints E21B43/106)} · CPC title

• E21B43/26 Primary

  by forming crevices or fractures · CPC title

• E21B34/14

  operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools {(E21B34/066 takes precedence)} · CPC title

• E21B34/00

  Valve arrangements for boreholes or wells · CPC title

• E21B43/12 Primary

  Methods or apparatus for controlling the flow of the obtained fluid to or in wells (E21B43/25 takes precedence; valve arrangements E21B34/00) · CPC title