Petroleum Exploration and Development >
Colloidal gas aphron (CGA) based foam cement system
Received date: 2019-03-03
Revised date: 2019-09-25
Online published: 2019-12-23
To solve the problems such as high denstiy, foam instability, low compressive strength, high porosity and poor durability associated with conventional foam cements, a novel colloidal gas aphron (CGA) based foam cement system was investigated and tested for properties. CGA is used in a base slurry as the foam component and the recipe was optimized with hollow sphere and micro-silica in terms of particle size distribution (PSD). Porosity, permeability, strength, brittleness, elasticity, free water content, foam stability and density tests on the CGA based foam cement system were carried out to evaluate the performance of the system. According to the experiment results, at the foam proportion of 10%, the cement density was reduced to 1 040 kg/m 3, and stable microfoam net structure not significantly affected by high temperature and high pressure was formed in the cement system. The optimal CGA based foam cement has a free water content of 0%, porosity of 24%, permeability of 0.7×10 -3 μm 2, low elasticity modulus, high Poisson’s ratio, and reasonable compressive strength, and is more elastic and flexible with capability to tolerate regional stresses.
Arian VELAYATI , Morteza ROOSTAEI , Rasool RASOOLIMANESH , Mohammad SOLEYMANI , Vahidoddin FATTAHPOUR . Colloidal gas aphron (CGA) based foam cement system[J]. Petroleum Exploration and Development, 2019 , 46(6) : 1281 -1287 . DOI: 10.1016/S1876-3804(19)60281-8
| [1] | VELAYATI A, TOKHMECHI B, SOLTANIAN H , et al. Cement slurry optimization and assessment of additives according to a proposed plan. Journal of Natural Gas Science and Engineering, 2015,23:165-170. |
| [2] | VELAYATI A, SOLTANIAN H, POURMAZAHERI Y , et al. Investigation of cassia fistula fruit dry extract effect on the oil and gas well cement properties. Journal of Natural Gas Science and Engineering, 2016,36:298-304. |
| [3] | CUNNINGHAM E, HEATHMAN J, KUTCHKO B , et al. Defining the difference between laboratory and field-generated foamed cement.OTC 27581, 2017. |
| [4] | CHATTERJI J, BRENNEISBOBBY D C, KING B J , et al.Foamed cement slurries,additives and methods: US 7013975 .2006 -03-21. |
| [5] | DROCHON B ,MAROY P. Permeable cements: US 6883609. 2005 -04-26. |
| [6] | HARRIS K L, CARPENTER R B, HIMES R E , et al.Well cementing using permeable cement: US 5339902. 1994-08-23. |
| [7] | NGUYEN P D, CROOK R J, BARTON J A , et al.Methods and compositions for forming permeable cement sand screens in well bores: US 6390195. 2002 -05-21. |
| [8] | VIDICK B, JAMES S G, DROCHON B . An alternative to sand- control screens: Is permeable cement a viable option?.SPE 102185, 2008. |
| [9] | POLLOCK J, VEEDU V, ELSHAHAWI H . Acoustically responsive cement for enhanced well integrity. OTC 29021, 2018. |
| [10] | NELSON E B, GUILLOT D E . Well cementing. 2nd ed. Sugar Land, TX: Schlumberger Educational Services, 2006. |
| [11] | ANYA A . Lightweight and ultra-lightweight cements for well cementing: A review. SPE 190079, 2018. |
| [12] | GLOSSER D, KUTCHKO B, BENGE G , et al. Relationship between operational variables, fundamental physics and foamed cement properties in lab and field generated foamed cement slurries. Journal of Petroleum Science and Engineering, 2016,145:66-76. |
| [13] | SPAULDING R . A quantitative assessment of atmospherically generated foam cements: Insights, impacts, and implications of wellbore integrity and stability. Pittsburgh, PA: University of Pittsburgh, 2015. |
| [14] | SEBBA F . Foams and biliquid foams: Aphrons. Angewandte Chemie International Edition, 1989,28(3):384-385. |
| [15] | BELKIN A, IRVING M, CONNOR B , et al. How aphron drilling fluids work.SPE 96145, 2005. |
| [16] | American Petroleum Institute . Recommended practice on preparation and testing of foamed cement slurries at atmospheric pressure: API RP 10B-4. Washington D. C., US: American Petroleum Institute, 2004. |
| [17] | AHMADI M A, GALEDARZADEH M, SHADIZADEH S R . Colloidal gas aphron drilling fluid properties generated by natural surfactants: Experimental investigation. Journal of Natural Gas Science and Engineering, 2015,27(2):1109-1117. |
| [18] | KLINKENBERG L J . The permeability of porous media to liquids and gases. Drill. & Prod. Prac., 1941,2(2):200-213. |
| [19] | JONES F O, OWENS W W . A laboratory study of low-permeability gas sands. Journal of Petroleum Technology, 1980,32(9):1631-1640. |
| [20] | RAVI K, GRAY D, PATTILLO P , et al. Procedures to optimize cement systems for specific well conditions. Houston, Texas: AADE Drilling Fluids Technical Conference, 2006. |
| [21] | IVERSON B, DARBE R, Mcmechan D . Evaluation of mechanical properties of cements. San Francisco, US: 42nd US Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, 2008. |
| [22] | CRAIG R R . Mechanics of materials. 3rd ed. Hoboken: John Wiley and Sons, Inc., 2011. |
/
| 〈 |
|
〉 |