Design and Development of a Novel Fluid Loss Additive for Invert Emulsion Drilling Fluids from a Renewable Raw Material

2019 ◽  
Author(s):  
Shadaab Maghrabi ◽  
Delores Smith ◽  
Aaron Engel ◽  
Jennifer Henry ◽  
Joseph Fandel
2020 ◽  
Vol 10 (8) ◽  
pp. 3449-3466
Author(s):  
Atul Kumar Patidar ◽  
Anjali Sharma ◽  
Dev Joshi

Abstract The hydrocarbon extraction and exploitation using state-of-the-art modern drilling technologies urge the use of biodegradable, environment-friendly drilling fluid and drilling fluid additives to protect the environment and humanity. As more environmental laws are enacted and new safety rules implemented to oust the usage of toxic chemicals as fluid additives, it becomes inevitable that we re-evaluate our choice of drilling fluid additives. Drilling fluids and its additives play a crucial role in drilling operations as well as project costing; hence, it is needed that we develop cost-effective environment-friendly drilling fluid additives that meet the requirements for smooth functioning in geologically complex scenarios as well as have a minimal ecological impact. The current research work demonstrates key outcomes of investigations carried out on the formulation of a sustainable drilling fluid system, where groundnut husk is used as a fluid loss additive and a rheological modifier having no toxicity and high biodegradability. Cellulose was generated from groundnut husk at two varying particle sizes using mesh analysis, which was then compared with the commercially available PAC at different concentrations to validate its properties as a comparable fluid loss retarder additive as well as a rheological modifier. In the present work, various controlling characteristics of proposed groundnut husk additive are discussed, where comparison at different concentrations with a commercially available additive, PAC, is also validated. The API filtration losses demonstrated by the (63–74) µm and the (250–297) µm proposed additive showed a decrease of 91.88% and 82.31%, respectively, from the base mud at 4% concentration. The proposed husk additives acted as a filtrate retarder additive without much deviation from base rheology and with considerably higher pH than the base mud. This investigation indicates that the proposed fluid loss additive and rheological modifier can minimize the environmental hazards and have proved to be a cost-effective eco-friendly alternative in this challenging phase of the hydrocarbon exploration industry.


2017 ◽  
Vol 31 (11) ◽  
pp. 11963-11970 ◽  
Author(s):  
Jie Cao ◽  
Lingwei Meng ◽  
Yuping Yang ◽  
Yuejun Zhu ◽  
Xiaoqiang Wang ◽  
...  

2014 ◽  
Vol 1004-1005 ◽  
pp. 623-626 ◽  
Author(s):  
Cha Ma ◽  
Long Li ◽  
Gang Wang ◽  
Xu Bo Yuan

Using widely distributed and cheap lignite as starting material, humic acid was modified by octadecylamine, and a new kind of humic acid acetamide was prepared. The optimal reaction conditions of the humic acid acetamide polymer were obtained through laboratory tests as follow: the ratio of of humic acid and octadecylamine was 1:1.5, the reaction temperature was 150 °C, and the reaction time was 16~18 h. The new product was characterized by IR, and the results showed that this substituted-ammonium humic acid was successfully prepared by reacting parts of carboxyl group of humic acid with octadecylamine. HTHP filtration experiments demonstrated that the substituted-ammonium humic acid had good fluid loss properties. As a result, this substituted-ammonium humic acid polymer is an excellent fluid loss additive, and it could meet the requirement of drilling operation under extreme condition.


2015 ◽  
Vol 7 (44) ◽  
pp. 24799-24809 ◽  
Author(s):  
Mei-Chun Li ◽  
Qinglin Wu ◽  
Kunlin Song ◽  
Sunyoung Lee ◽  
Chunde Jin ◽  
...  

2016 ◽  
Vol 139 ◽  
pp. 191-197 ◽  
Author(s):  
Md Amanullah ◽  
Jothibasu Ramasamy ◽  
Mohammed K. Al-Arfaj ◽  
Saudi Aramco

2016 ◽  
Vol 30 (9) ◽  
pp. 7221-7228 ◽  
Author(s):  
Fan Liu ◽  
Guancheng Jiang ◽  
Shuanglei Peng ◽  
Yinbo He ◽  
Jinxi Wang

2021 ◽  
Author(s):  
Dimitri Khramov ◽  
Evgeny Barmatov

Abstract Emulsifier concentration in SBM is an important factor of drilling fluid stability. Proper concentration of amidoamine emulsifier is imperative for controlling low fluid loss and maintaining emulsion stability. This study investigates the physical and chemical interactions between emulsifier and other additives and describes the processes by which emulsifier is depleted from the drilling fluid. Three main pathways of emulsifier consumption are identified: emulsifier adsorption on solids found in drilling fluids and low gravity solids (LGS), chemical degradation, and to stabilize the invert emulsion. Design of experiments model and analytical procedure based on 1H NMR (nuclear magnetic resonance) spectroscopy was used to quantify the required emulsifier concentration in Non-Aqueous Fluid system (NAF). Additionally, model systems were used to estimate the excess of emulsifier, evaluate the emulsifier losses due to alkaline hydrolysis at elevated temperature, and measure adsorption of emulsifier on barite and various LGS types. Calculations for emulsifier depletion based on model systems were correlated to performance of formulated drilling fluids for verification. Typical emulsifier requirement in high performance NAF is 8-12 pounds per barrel (ppb). Majority of the emulsifier is adsorbed on weighting agents (barite) and rheology modifiers (clays), which are used to formulate NAF, that contribute to their effective dispersion in the solution and control fluid rheology. The adsorption process is found to be sensitive to the emulsifier concentration, solids mineralogy, wetting agent and temperature. Analytical Langmuir-Freundlich isotherm was used to describe adsorption data and estimate the adsorption capacity of the system. The emulsifier degradation pathway is another important factor of emulsifier consumption; however, emulsifier degradation at 250°F is not significant. While NAF are generally run ‘rich’ to mitigate depletion and maintain fluid stability, adsorption onto minerals will become an issue especially at high LGS concentration. These results will be greatly beneficial in the further development of NAF drilling fluid formulations and will assist field engineers in understanding the effect excess emulsifier will have on the drilling fluid and enable them to more effectively control the fluid properties under variations in emulsifier and LGS concentration during drilling.


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