Downhole formation testing tool
AssigneeSchlumberger Technology Corporation
InventorsLennox Reid, Edward Harrigan, William E. Brennan, III
Life of this patent
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Abstract
Embodiments of the invention relate to a wireline assembly that includes a coring tool for taking coring samples of the formation and a formation testing tool for taking fluid samples from the formation, where the formation testing tool is operatively connected to the coring tool. In some embodiments, the wireline assembly includes a low-power coring tool. In other embodiments, the coring tool includes a flowline for formation testing.
Claims43
A wireline assembly, comprising:
- a housing;
- a coring tool for taking coring samples of the formation, wherein the coring tool is disposed in the housing and includes a coring bit extendable from the housing;
- and
- a formation testing tool for taking fluid samples from the formation,
- wherein the formation resting tool is operatively connected to the coring tool.
A method for evaluating a formation, comprising:
- lowering a wireline assembly into a borehole;
- activating a formation testing tool connected in the wireline assembly to obtain a sample fluid from the formation;
- activating a coring tool connected in the wireline assembly;
- and
- extending a coring bit of the coring tool from the wireline assembly into a formation to obtain a core sample.
A downhole tool, comprising:
- a tool body having an opening therein;
- a coring bit disposed proximate the opening in the tool body and selectively extendable therethrough;
- and
- a flowline disposed proximate the coring bit;
- and
- a sealing surface disposed proximate a distal end of the flowline.
A field joint for connecting tool modules, comprising:
- an upper module having a bottom field joint connector at a lower end of the upper module;
- and
- a lower module having a top field joint connector at an upper end of the lower module,
- wherein the upper module comprises:
- a cylindrical housing far receiving the lower module;
- a first flowline;
- and
- a female socket bulkhead having at least one female socket, and
- wherein the lower module comprises:
- a second flowline;
- a male pin bulkhead;
- and
- one or more male pins disposed in the male pin bulkhead so that at least a portion of the one or more male pins protrudes upwardly from the male pin bulkhead.
A method for taking downhole samples, comprising:
- obtaining a core sample using a caring bit disposed on a sample block in a downhole tool;
- rotating the sample block;
- establishing fluid communication between a flowline in the sample block and a formation;
- and
- withdrawing a formation fluid from the formation through the flowline.
A method for taking downhole samples, comprising:
- establishing fluid communication between a flowline in a downhole tool and a formation by extending the a packer seal to be in contact with a formation;
- obtaining a core sample using a coring bit configured to extend inside a sealing area of the packer seal;
- ejecting the core from the coring bit and into a sample chamber;
- and
- withdrawing a formation fluid from the formation through the flowline.
Dependencies are inferred from the claim text.