Preparation and Performance Evaluation of a Drilling Fluid MicrosphereStarch Filter Loss Reducer

CHEN Siqi; QIU Zhengsong; ZHONG Hanyi; ZHANG Qian; YAN Feng; LIU Shujie

doi:10.3969/j.issn.1001-5620.2019.04.003

Volume 36 Issue 4

Aug. 2019

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CHEN Siqi, QIU Zhengsong, ZHONG Hanyi, ZHANG Qian, YAN Feng, LIU Shujie. Preparation and Performance Evaluation of a Drilling Fluid MicrosphereStarch Filter Loss Reducer[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(4): 414-419. doi: 10.3969/j.issn.1001-5620.2019.04.003

Citation:

CHEN Siqi, QIU Zhengsong, ZHONG Hanyi, ZHANG Qian, YAN Feng, LIU Shujie. Preparation and Performance Evaluation of a Drilling Fluid MicrosphereStarch Filter Loss Reducer[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(4): 414-419. doi: 10.3969/j.issn.1001-5620.2019.04.003

Citation:

CHEN Siqi, QIU Zhengsong, ZHONG Hanyi, ZHANG Qian, YAN Feng, LIU Shujie. Preparation and Performance Evaluation of a Drilling Fluid MicrosphereStarch Filter Loss Reducer[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(4): 414-419. doi: 10.3969/j.issn.1001-5620.2019.04.003

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Preparation and Performance Evaluation of a Drilling Fluid MicrosphereStarch Filter Loss Reducer

doi: 10.3969/j.issn.1001-5620.2019.04.003

1. School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580;
2. Research Institute of Drilling and Production Technology, Liaohe Oilfield, Panjin, Liaoning 124010;
3. Research Center of CNOOC, Beijing 100028

Received Date: 2019-04-26
Publish Date: 2019-08-30

Abstract

Abstract

To address the poor temperature resistance of conventional starches, a novel environmentally friendly microspherestarch has been synthesized through emulsion polymerization using soluble starch as the raw material and N-hydroxysuccinimide (NHC) as the crosslinking agent. The microspherestarch was characterized with FT-IR, SEM, TGA and Nanobrook particle-zeta potential tester. The microspherestarch was evaluated for its filtration control performance and temperature resistance in fresh water drilling fluid, saltwater base drilling fluid and calcium chloride treated water base drilling fluid. It was found that the particles of the microsphere starch have uniform particle size distribution (ca. 50 nm) and are in a shape of sphere. It has good thermal stability; after hot rolled at 150℃, a 4% bentonite slurry, a 10% saltwater mud and a 1% CaCl₂ mud treated with 1% microsphere starch respectively had their API filter loss reduced by 70%, 55% and 60% respectively. This microsphere starch has only minor effect on the rheology of a drilling fluid, it is superior to conventional starch in filtration control, high temperature resistance and salt resistance.
- Water base drilling fluid,
- Filter loss reducer,
- Microsphere starch,
- High temperature resistant

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References(20)

References

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