Anaerobic Biodegradability of Oil Base Fluid For Invert Emulsion Drilling Fluid.

1998 ◽  
Author(s):  
D. Blanchet ◽  
A. Audibert ◽  
J-F. Argillier
Keyword(s):  
Base Fluid ◽  
Drilling Fluid ◽  
Anaerobic Biodegradability ◽  
Invert Emulsion

DRILLING FLUIDS AND THEIR ENVIRONMENTAL MANAGEMENT: CHARACTERISATION OF BASE FLUIDS AND THE INTRODUCTION OF QUALITY CONTROL PROCEDURES

1999 ◽  
Vol 39 (1) ◽  
pp. 628
Author(s):  
R. Papp ◽  
S.J. Fisher
Keyword(s):  
Quality Control ◽  
Environmental Impact ◽  
Base Fluid ◽  
Public Perception ◽  
Drilling Fluid ◽  
Gas Chromatography Mass Spectrometry ◽  
Drilling Fluids ◽  
The North ◽  
Invert Emulsion ◽  
Control Procedures

Since the early 1990s, a variety of invert emulsion base fluids have been introduced into the drilling fluid market. The chemical composition of these fluids has evolved with the focus on minimising the environmental impact of discharged cuttings that contain adhered drilling fluids.The trend within Australia and other regions in which drilling fluids are extensively used, is that the life span of these fluids has become increasingly shorter, due to environmental impact pressures from the regulatory authorities in the North Sea and Australia, as well as public perception within these regions.The Well Construction Department within Woodside Energy Ltd. (WEL) has identified the need to characterise these base fluids in a manner that was both reproducible and definitive. The need was driven by the availability of a large number of commercial base fluids claiming technical and environmental superiority and the requirement for robust quality control systems for the base fluids from production to discharge—a cradle to grave philosophy.To this end, a study was initiated in 1997 where several drilling fluids were analysed using gas chromatography- mass spectrometry (GC-MS) techniques. From this work, four classifications of invert emulsion, non-water based fluids (NWBF) have been identified. They include low toxicity oil based fluids (LTOBF), enhanced mineral oil based fluids (EMOBF), synthetic based fluids (SBF), and oxygen based fluids (OBF). The definition of these fluids and the rationale for this classification is presented here.The GC-MS characterisation has provided an insight into the structure of the base fluid, rheological characteristics, quality control/quality assurance, and in the future, the ability to develop a robust link to minimising environmental impact of the discharge.All of these benefits will aid in developing drilling fluids which achieve the technical objectives of drilling fluids as well as minimising the environmental impact. The quality control procedures for the base fluid also allow an auditable process for benchmarking with input from the regulator, operator, fluid service company and manufacturer.

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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