Title:
PARTICLE-IMPACT DRILLING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/005217
Kind Code:
A1
Abstract:
A particle-impact drilling method comprises the following steps: a. a particle injection step: injecting a slurry and particles in a well by using an injection apparatus; b. a particle recovery step: guiding a mixture of particles, rock debris, and the slurry returned from the well to flow into a magnet separator (10) through pipelines by using a rotary control head on a derrick floor, and the magnet separator (10) transferring the separated particles into a storage tank, and transferring a mixture of the rock debris and the slurry into a slurry tank (11); and c. injecting particles in the storage tank into the well again for drilling by using the injection apparatus, thus forming a drilling cycle. This solution can effectively resolve the problem in the prior art of a large number of slurry leakage positions, thereby greatly reducing the risk of environmental pollution.
Inventors:
LI WEICHENG (CN)
YAO JIANLIN (CN)
CHEN XIAOBIN (CN)
CHEN LI (CN)
LIU BIN (CN)
HE CHAO (CN)
HU PAN (CN)
YAO JIANLIN (CN)
CHEN XIAOBIN (CN)
CHEN LI (CN)
LIU BIN (CN)
HE CHAO (CN)
HU PAN (CN)
Application Number:
PCT/CN2016/089442
Publication Date:
January 12, 2017
Filing Date:
July 08, 2016
Export Citation:
Assignee:
CCDC PETROLEUM DRILLING & PRODUCTION TECH CO LTD (CN)
International Classes:
E21B7/16
Foreign References:
| CN105134080A | 2015-12-09 | |||
| CN204782761U | 2015-11-18 | |||
| CN104975809A | 2015-10-14 | |||
| CN102022078A | 2011-04-20 | |||
| CN102619468A | 2012-08-01 | |||
| CN104763334A | 2015-07-08 | |||
| US4751887A | 1988-06-21 |
Attorney, Agent or Firm:
CHENGDU RUIDAO AGENT FIRM (GENERAL PARTNERSHIP) (CN)
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