scholarly journals Resource recovery and harmless treatment of waste oil-in-water drilling fluid

2017 ◽  
Vol 22 (3) ◽  
pp. 277-280
Author(s):  
Chao Tang ◽  
Shui Xiang Xie
2016 ◽  
Vol 10 (1) ◽  
pp. 120-130
Author(s):  
Zorka N. Pintarič ◽  
Gorazd P. Škof ◽  
Zdravko Kravanja

Author(s):  
Xiaoxu Li ◽  
Yuxue Sun ◽  
Xiangming Chen ◽  
Zengkui Wang ◽  
Jianjun Xu

2012 ◽  
Vol 524-527 ◽  
pp. 1581-1586
Author(s):  
Ping Quan Wang ◽  
Zhi Wei Qian ◽  
Yang Bai ◽  
Zai Jun Li ◽  
Shuang Meng

Oil-based drilling fluids are essential for challenging drilling operations. However oil-based drilling fluid after using for the well site and the surrounding environment also poses a serious negative effect. Therefore, for studying on harmless technology of waste oil-based drilling fluid in this paper. Base on the tradition treatment technology for waste oil-based drilling fluid, by the preferred for treatment chemicals, improved the experimental methods and conditions, achieved some research results. Added 8.5g/L xylene/ispropanol complex demulsifier under the 50°C, pH value of 4 conditions to breaking the waste oil-based drilling fluid, the remove base oil rate is 84%, the moisture content is less than 1%, reached the "Twelfth Five-Year" major projects of national requirements' indicators; added 11ml/100g breaker SW-B, 10g/100g lime and 30g/100g cement to system for curing the waste drilling fluid, the solidified strength of the cured than 0.5MPa; Determined to leaching toxicity of solid waste, the pollution index of leaching toxicity of solid waste meeting National Integrated wastewater discharge standard (GB8978-1996).


2009 ◽  
Vol 48 (4) ◽  
pp. 2100-2106 ◽  
Author(s):  
Gemma Gutiérrez ◽  
José M. Benito ◽  
José Coca ◽  
Carmen Pazos

2016 ◽  
Vol 881 ◽  
pp. 416-421 ◽  
Author(s):  
Maria Monteiro Barros Ravenna ◽  
Wilson Acchar ◽  
E.L. Barros Neto ◽  
J.B. Silva ◽  
Vamberto Monteiro Silva

The properties of ceramic materials can be greatly influenced when a residue is added to its composition. This article aims to study the incorporation of waste oil well drilling fluid in the standard bulk for fabrication of red ceramic. The success of the merger can reduce costs in the production of ceramic pieces and reduce the environmental impacts caused by waste. The results reveals that the use of the residue for the manufacture of the ceramic products is possible (tiles, massive bricks and hollow bricks) replacing clay up to 40%, according the requirements of the norm and in the literature for the technological properties of the final product.


2019 ◽  
Vol 78 ◽  
pp. 03003
Author(s):  
Xinyuan Zhan ◽  
Xiang Wang ◽  
Li’ao Wang ◽  
Tengtun Xu ◽  
Chaochao Hu ◽  
...  

Curing research on waste oil-base shale gas drilling mud was performed for optimal additions matching. Destabilizing experiments on waste drilling mud demonstrated that Aluminum potassium sulfate (KAl(SO4)2) played a best role of destabilizing effects when compared with FeCl3 and AlCl3 based on demulsification mechanism about oil-in-water type. Aluminum potassium sulfate emerged an impact influence on curing effects simultaneously when compared to sodium silicate, alumina, lime and complex Portland cement. Orthogonal test on curing waste drilling mud revealed that the optimal operation conditions of handling waste drilling mud was 4% aluminum potassium sulfate, 4% sodium silicate, 4% alumina, 4% lime and 16% complex Portland cement. Under this condition, unconfined compressive strength of the curing product was 1.80MPa, and lead leaching concentration cannot be detected after 7d maintenance. The curing mechanism was mainly the encapsulation of C3S and solid waste contaminated by mineral oil can be efficiency treated after breaking the interface of oil-in-water type.


Author(s):  
Gilles Numkam ◽  
Babak Akbari

Abstract Global energy demand continues to drive oil and gas exploration in increasingly challenging environments. The extreme temperatures and pressures drilling fluids are subjected to require optimum design of their rheology. Among the numerous components used in the design of drilling fluids are surfactants. Surfactants play an important role in the emulsification of immiscible liquids as well as the alteration of cuttings wettability to facilitate transport to the surface. Nonionic surfactants, depending on their chemical group allow the inversion of oil-in-water emulsions (O/W) to water-in-oil (W/O) and vice-versa depending on the direction of temperature change. In this study, emulsion-suspension samples were prepared with different nonionic surfactants at Oil:Water ratios of 50:50 and 60:40. The mechanical properties of the samples was assessed using a scientific rheometer at temperatures ranging from 0–90 °C. Phase inversion from oil-in-water to water-in-oil was observed for samples stabilized by polyoxyethylene oleyl ether surfactants. Build up in the apparent viscosity of the samples was observed following phase inversion, mainly resulting from the formation of nanosized dispersed water droplets. Findings in the study highlighted the possibility of obtaining different drilling fluid types during downhole circulation, thereby paving a path for the design optimization of drilling fluids used in offshore operations.


SPE Journal ◽  
2020 ◽  
Vol 25 (03) ◽  
pp. 1259-1271
Author(s):  
Renzhou Meng ◽  
Chengwen Wang ◽  
Zhonghou Shen

Summary In this study, an oil-in-water nanoemulsion for the effective removal of an oil-based drilling fluid has been developed by means of the phase-inversion concentration method. The influence of four factors on the droplet size and removal efficiency were tested, including the mass ratio of mixed surfactants (Rm), the surfactant/oil ratio (SOR), the mass concentration of cosurfactant (cco), and the salinity of the saline solution (cs). Considering the application environment of displacement spacers, the long-term stability and temperature resistance were investigated. The results showed that Rm and SOR had an obvious influence on the removal efficiency and droplet size of nanoemulsions. Because of the synergy effect of the surfactants, the nanoemulsion possesses remarkable storage stability and temperature resistance. Moreover, the removal mechanisms of the nanoemulsion were analyzed by the dynamic interfacial tension (IFT), dynamic wetting angle, and solubilization tests. The results indicated that the nanoemulsion could spread rapidly and thoroughly on the oil-wetting surfaces, and the nanoemulsion can contain more oil while the system is still stable, which is beneficial for the removal of an oil-based drilling fluid.


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