Volume 35 Issue 4
Jul.  2018
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YANG Kunpeng, XIANG Zhonghua, HUANG Mingyu, SUN Fuquan, HOU Bing. Study and Application of a Low Cost Ultra-low Density Cement Slurry[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(4): 92-96. doi: 10.3969/j.issn.1001-5620.2018.04.017
Citation: YANG Kunpeng, XIANG Zhonghua, HUANG Mingyu, SUN Fuquan, HOU Bing. Study and Application of a Low Cost Ultra-low Density Cement Slurry[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(4): 92-96. doi: 10.3969/j.issn.1001-5620.2018.04.017

Study and Application of a Low Cost Ultra-low Density Cement Slurry

doi: 10.3969/j.issn.1001-5620.2018.04.017
  • Received Date: 2018-03-10
  • Publish Date: 2018-07-30
  • By compounding a high water demand material, a high active material and an ultra-fine material, a low cost strengthening light weight material BCE-650S was developed for use in low density cement slurry as a high performance additive. An ultra-low density cement slurry was developed with BCE-650S and other additives and mixed materials selected for use with BCE-650S. This cement slurry has densities adjustable between 1.20 g/cm3 and 1.30 g/cm3, and liquid/solids ratio between 1.07 and 1.23, and therefore has its cost greatly reduced. Laboratory study showed that the 24-hour compressive strength of the ultra-low density cement slurry at 60℃ is greater than 8 MPa, and the 72-hour compressive strength is greater than 10 MPa. The settling stability of the cement slurry is quite good; the difference between the density of the top and the density of the bottom of the cement slurry is only 0.01 g/cm3. The cement slurry has controllable filter loss, adjustable thickening time and high compressive strength, satisfying the need of field operation. This cement slurry is suitable for cementing low pressure long open hole with mud loss zones. Success in applying the cement slurry in Jilin Oilfield indicates that this cement slurry will have good application prospect.

     

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