Degradable materials for oil and gas field operations and their synthesis method

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United States of America Patent

PATENT NO 9969922
SERIAL NO

15209465

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Abstract

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A synthesis method for degradable material(s) (DM) which can be used in oil and gas field operations. The method involves using two, three, four or five polymer and chain extenders, including poly glycolic acid (PGA), polycaprolactone (PCL), polylactic acid (PLA), poly (butylene succinate) (PBS) and poly(3-hydroxybutyrate) (PHA), to synthesize a “resin alloy” through the melt mixing reaction method, which can be used in oil and gas field operations. The proposed DM can be prepared into flake, powder, granules, and ball shapes, or by one of the pure PGA, PCL, PLA, PBS and PHA, into flake, powder, granule and ball shapes, which can be further used in all kinds of operations (drilling, well completion, workover and acidizing fracturing) in oil and gas fields, such as temporary plugging to protect a reservoir, temporary plugging of perforation holes, construction intervals, etc. The DMs are fully degradable and cause almost no damage to formations.

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Patent Owner(s)

Patent OwnerAddress
CHINA UNIVERSITY OF PETROLEUM-BEIJING18 FUXUE ROAD CHANGPING DISTRICT BEIJING 102249
KMS OIL FIELD CHEMICALS & TECHNICAL SERVICES LTD BEIJINGROOM 1802 CAIZHI BUILDING B NO 18 ZHONGGUANCUN EAST ROAD HAIDEN DISTRICT BEIJING

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Min Beijing, CN 957 5670
Zhou, Cuihong Beijing, CN 2 3
Zhou, Fujian Beijing, CN 3 3
Zhou, Zhipeng Beijing, CN 27 97
Zuo, Jie Beijing, CN 4 5

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