# US 2014/0196885 A1 · Method and System for Monitoring The Incursion of Particulate Material into A Well Casing within Hydrocarbon Bearing Formations including Gas Hydrates

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- Number: US 2014/0196885 A1
- Document ID: US20140196885A1
- Status: Published application
- Kind: A1
- Application number: 13/771,083
- Filed: 2013-02-20
- Published: 2014-07-17
- Earliest claimed: 2013-01-14
- Assignees: Schlumberger Technology Corporation
- Applicants: Schlumberger Technology Corporation
- Inventors: Shunetsu Onodera; Hitoshi Sugiyama; Brian W. Cho; Ahmed Al-Jubori; Masafumi Fukuhara
- Web page: https://patentgrep.com/patent/US20140196885A1

## CPC

- E21B 47/10: Locating fluid leaks, intrusions or movements
- E21B 33/0387: {Hydraulic stab connectors}
- E21B 43/128: {Adaptation of pump systems with down-hole electric drives}
- E21B 43/295: Gasification of minerals, e.g. for producing mixtures of combustible gases (E21B43/243 takes precedence)
- E21B 41/0099: {specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates}
- E21B 43/12: Methods or apparatus for controlling the flow of the obtained fluid to or in wells (E21B43/25 takes precedence; valve arrangements E21B34/00)
- E21B 43/121: {Lifting well fluids (monitoring of down-hole pump systems E21B47/008)}
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A method and system for monitoring any incursion of particulate matter from a gas hydrate formation into a well casing used for the production of the gas hydrate and determining the degree of incursion of particulate material within the distal end of the well casing.

## Claims

### Claim 1

A system for determining the degree of incursion of particulate matter into a well casing used in the production of gas from a subterranean gas hydrate formation, said system comprising:
a vibrator connected beneath a submersible pump positioned within the well casing for pumping gas and water out of the well casing;
a vibration bar connected to said vibrator and extending toward the distal end of the well casing, wherein observation of the vibration mode of said vibration bar enables estimation of the interface between fluid and particulate material within the distal end of the well casing.