Low-Density Invert Emulsion Drilling Fluid Enables Recovery of Oil Reserves in Extremely Depleted Reservoirs: A Case History From Valhall, Norway

2020 ◽  
Author(s):  
Arne Askø ◽  
Eva Teresia Alsvik ◽  
Trond Helge Danielsen ◽  
Marton Audun Haga
Keyword(s):  
Case History ◽  
Drilling Fluid ◽  
Low Density ◽  
Oil Reserves ◽  
Invert Emulsion

LWD Resistivity Imaging in Invert Emulsion Oil-Based Drilling Fluid

2016 ◽  
Author(s):  
Jianzhong Yang ◽  
Joseph Szabo ◽  
Reza E. Osgouei ◽  
Joseph Arensdorf ◽  
Rosa Swartwout ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Resistivity Imaging ◽  
Invert Emulsion ◽  
Emulsion Oil ◽  
Lwd Resistivity

Low ECD High Performance Invert Emulsion Drilling Fluids: Lab Development and Field Deployment

2021 ◽  
Author(s):  
Vikrant Wagle ◽  
Abdullah Yami ◽  
Michael Onoriode ◽  
Jacques Butcher ◽  
Nivika Gupta
Keyword(s):  
High Performance ◽  
Filter Cake ◽  
Drilling Fluid ◽  
Field Performance ◽  
Superior Performance ◽  
Core Material ◽  
Drilling Fluids ◽  
Invert Emulsion ◽  
Field Deployment ◽  
Permeability Studies

Abstract The present paper describes the results of the formulation of an acid-soluble low ECD organoclay-free invert emulsion drilling fluid formulated with acid soluble manganese tetroxide and a specially designed bridging package. The paper also presents a short summary of field applications to date. The novel, non-damaging fluid has superior rheology resulting in lower ECD, excellent suspension properties for effective hole cleaning and barite-sag resistance while also reducing the risk of stuck pipe in high over balance applications. 95pcf high performance invert emulsion fluid (HPIEF) was formulated using an engineered bridging package comprising of acid-soluble bridging agents and an acid-soluble weighting agent viz. manganese tetroxide. The paper describes the filtration and rheological properties of the HPIEF after hot rolling at 300oF. Different tests such as contamination testing, sag-factor analysis, high temperature-high pressure rheology measurements and filter-cake breaking studies at 300oF were performed on the HPIEF. The 95pcf fluid was also subjected to particle plugging experiments to determine the invasion characteristics and the non-damaging nature of the fluids. The 95pcf HPIEF exhibited optimal filtration properties at high overbalance conditions. The low PV values and rheological profile support low ECDs while drilling. The static aging tests performed on the 95pcf HPIEF resulted in a sag factor of less than 0.53, qualifying the inherent stability for expected downhole conditions. The HPIEF demonstrated resilience to contamination testing with negligible change in properties. Filter-cake breaking experiments performed using a specially designed breaker fluid system gave high filter-cake breaking efficiency. Return permeability studies were performed with the HPIEF against synthetic core material, results of which confirmed the non-damaging design of the fluid. The paper thus demonstrates the superior performance of the HPIEF in achieving the desired lab and field performance.

Cleanup characteristics and mechanisms of reversible invert emulsion drilling fluid

2015 ◽  
Vol 133 ◽  
pp. 296-303 ◽  
Author(s):  
Yanjun Ren ◽  
Guancheng Jiang ◽  
Fengxia Li ◽  
Haobo Zhou ◽  
Yuxiu An
Keyword(s):  
Drilling Fluid ◽  
Invert Emulsion

scholarly journals An investigation on environmentally friendly biodiesel-based invert emulsion drilling fluid

2015 ◽  
Vol 6 (3) ◽  
pp. 505-517 ◽  
Author(s):  
Wai Li ◽  
Xionghu Zhao ◽  
Yihui Ji ◽  
Hui Peng ◽  
Yufei Li ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Environmentally Friendly ◽  
Invert Emulsion
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