Back to results
US 10,047,605 B2Granted
Method and system for wireless in-situ sampling of a reservoir fluid
AssigneeSinvent AS
InventorsKolbjorn Zahlsen, Lars Kilaas, Paal Skjetne
Life of this patent
Estimating the term…
Abstract
It is described a method and a system for wireless in-situ sampling of a reservoir fluid from a hydrocarbon reservoir comprising obtaining a number of local samples of the reservoir fluid from different zones of the reservoir at given times. Local characterization of production fluid is obtained based on identifying chemical fingerprints of each of the number of local samples. This information can be used to determine local production rates from different zones in the well or from coming led wells.
Claims43
A method for wireless in-situ sampling of a reservoir fluid from a hydrocarbon reservoir, the method comprising:
- obtaining a number of local samples of the reservoir fluid from different zones of the hydrocarbon reservoir at given times,
- wherein each of the number of local samples is contained in a carrying agent, and
- wherein each of the number of local samples is obtained by:
- flowing the reservoir fluid through a flow conduit in a reservoir fluid sampling unit arranged in the hydrocarbon reservoir;
- generating the carrying agent in-situ at the given times by the reservoir fluid sampling unit arranged in the hydrocarbon reservoir;
- mixing the reservoir fluid with the carrying agent in the flow conduit while flowing the reservoir fluid through the flow conduit in the reservoir fluid sampling unit, whereby each of the number of the local samples is preserved inside the carrying agent, and whereby the carrying agent comprises a tracer unique for a zone of the hydrocarbon reservoir, the tracer identifying a zone from among the different zones where each of the number of the local samples is obtained;
- and
- releasing the carrying agent into a well stream.
5 more elements
A sampling unit for wireless in-situ sampling of a reservoir fluid from a hydrocarbon reservoir, the sampling unit is adapted to be arranged in the hydrocarbon reservoir, the sampling unit obtaining a number of local samples of the reservoir fluid from different zones of the hydrocarbon reservoir at given times,
- wherein each of the number of local samples is contained in a carrying agent generated in-situ by the sampling unit, and
- wherein each of the number of local samples is obtained by:
- flowing the reservoir fluid through a flow conduit in the sampling unit arranged in the hydrocarbon reservoir;
- generating the carrying agent in-situ at the given times by the sampling unit arranged in the hydrocarbon reservoir;
- mixing the reservoir fluid with the carrying agent in the flow conduit while flowing the reservoir fluid through the flow conduit in the sampling unit, whereby each of the number of the local samples is preserved inside the carrying agent, and whereby the carrying agent comprises a tracer unique for a zone of the hydrocarbon reservoir, the tracer identifying a zone from among the different zones where each of the number of the local samples is obtained;
- and
- releasing the carrying agent into a well stream.
4 more elements
The sampling unit according to 23, wherein the carrying agent comprising at least one of:
- at least one elastomer,
- a foam, or
- a combination of at least one elastomer and a foam.
A method for local characterization of production fluid from in-situ sampling of a reservoir fluid from a hydrocarbon reservoir, the method comprising:
- obtaining a number of local samples of the reservoir fluid from different zones of the hydrocarbon reservoir or different comingled wells at given times,
- wherein each of the number of local samples is contained in a carrying agent,
- wherein each of the number of local samples is obtained by:
- flowing the reservoir fluid through a flow conduit in a reservoir fluid sampling unit arranged in the hydrocarbon reservoir;
- generating the carrying agent in-situ at the given times by the reservoir fluid sampling unit arranged in the hydrocarbon reservoir;
- mixing the reservoir fluid with the carrying agent in the flow conduit while flowing the reservoir fluid through the flow conduit in the reservoir fluid sampling unit, whereby each of the number of the local samples is preserved inside the carrying agent, and whereby the carrying agent comprises a tracer unique for a zone of the hydrocarbon reservoir, the tracer identifying a zone from among the different zones where each of the number of the local samples is obtained;
- and
- releasing the carrying agent into a well stream, and
- wherein the method further comprises identifying chemical fingerprints of each of the number of local samples.
6 more elements
A method for local characterization of production fluid from in-situ sampling of a reservoir fluid from a hydrocarbon reservoir, the method comprising:
- obtaining a number of local samples of the reservoir fluid from different zones of the reservoir at given times using a post installed well tool,
- wherein each of the number of local samples is contained in a carrying agent,
- wherein each of the number of local samples is obtained by:
- flowing the reservoir fluid through a flow conduit in a reservoir fluid sampling unit arranged in the hydrocarbon reservoir;
- generating the carrying agent in-situ at the given times by the reservoir fluid sampling unit arranged in the hydrocarbon reservoir;
- mixing the reservoir fluid with the carrying agent in the flow conduit while flowing the reservoir fluid through the flow conduit in the reservoir fluid sampling unit, whereby each of the number of the local samples is preserved inside the carrying agent, and whereby the carrying agent comprises a tracer unique for a zone of the hydrocarbon reservoir, the tracer identifying a zone from among the different zones where each of the number of the local samples is obtained;
- and
- releasing the carrying agent into a well stream, and
- wherein the method further comprises identifying chemical fingerprints of each of the number of local samples.
6 more elements
A system for local characterization of production fluid from in-situ sampling of a reservoir fluid from a hydrocarbon reservoir comprising:
- a sampling unit for obtaining a number of local samples of the reservoir fluid from different zones of the hydrocarbon reservoir at given times;
- and
- at least one analyzing device identifying chemical fingerprints of each of the number of local samples,
- wherein each of the number of local samples is contained in a carrying agent generated in-situ by the sampling unit, and
- wherein each of the number of local samples is obtained by:
- flowing the reservoir fluid through a flow conduit in the sampling unit arranged in the hydrocarbon reservoir;
- generating the carrying agent in-situ at the given times by the sampling unit arranged in the hydrocarbon reservoir;
- mixing the reservoir fluid with the carrying agent in the flow conduit while flowing the reservoir fluid through the flow conduit in the sampling unit, whereby each of the number of the local samples is preserved inside the carrying agent, and whereby the carrying agent comprises a tracer unique for a zone of the hydrocarbon reservoir, the tracer identifying a zone from among the different zones where each of the number of the local samples is obtained;
- and
- releasing the carrying agent into a well stream.
7 more elements
A method for monitoring of reservoir fluids from different zones in a hydrocarbon reservoir, the method comprising:
- obtaining a number of samples of a production flow from the hydrocarbon reservoir in a topside location,
- wherein each of the number of local samples is contained in a carrying agent,
- wherein each of the number of local samples is obtained by:
- flowing the reservoir fluid through a flow conduit in a reservoir fluid sampling unit arranged in the hydrocarbon reservoir;
- generating the carrying agent in-situ at the given times by the reservoir fluid sampling unit arranged in the hydrocarbon reservoir;
- mixing the reservoir fluid with the carrying agent in the flow conduit while flowing the reservoir fluid through the flow conduit in the reservoir fluid sampling unit, whereby each of the number of the local samples is preserved inside the carrying agent, and whereby the carrying agent comprises a tracer unique for a zone of the hydrocarbon reservoir, the tracer identifying a zone from among the different zones where each of the number of the local samples is obtained;
- and
- releasing the carrying agent into a well stream, and
- wherein the method further comprises:
- analyzing the number of samples identifying chemical fingerprints of each of the number of samples;
- and
- comparing the identified chemical fingerprints of each of the number of samples to a map of fingerprints of compositions of reservoir fluid in the different zones in the hydrocarbon reservoir.
9 more elements
Dependencies are inferred from the claim text.