Diverse Application of Unique High-Performance Water-Based-Mud Technology in the Middle East

Abstract

fax 01-972-952-9435. AbstractA high performance water based mud (HPWBM) system has been used successfully to address a combination of drilling challenges faced in the Middle East. Drilling problems encountered in the area typically include shale instability through pressure transmission effects, swelling clay-stone, bit balling, drill-string accretion, differential sticking over tight gas permeable sands and down-hole losses. All these challenges can be very difficult to overcome with conventional water based mud (WBM) systems and can prove very expensive in terms of lost mud, lost down-hole tools, non performance rig time, side-tracks or ultimate failure to meet well or section objectives.The HPWBM system was introduced to provide considerable improvement in WBM performance and also provide an environmentally benign alternative to oil based muds (OBM) while emulating OBM drilling performance attributes. Recent applications in the Middle East have proved that the HPWBM system can be applied as an alternative to OBM, successfully achieving the objectives of the sections while providing drilling performance comparative to OBM. This paper discusses the technical features of the HPWBM system, gives an outline of previous applications and presents detailed case histories of the more diverse applications of the system and its components in wells in the Middle East, while comparing performance to offsets drilled with conventional WBM and OBM.

Experimental Investigations Into the Performance of a Flat-Rheology Water-Based Drilling Fluid

“…Unfortunately, as far as we are aware, the FR WBM system has remained rarely referenced. One similar concept is reported in the development of high-performance AFs (Al-Ansari et al 2005;Dye et al 2005;Morton et al 2005). Consequently, it is interesting to understand how FR WBM functions at a wide range of temperatures.…”

Metodyka kontrolowania związków aminowych i lateksów w płuczkach wiertniczych

“…Dane literaturowe (Bielewicz i Bortel, 2000;Bielewicz et al, 2003aBielewicz et al, , 2003bvan Oort, 2003;Dye et al, 2004Dye et al, , 2005Al-Ansari et al, 2005;Zhong, 2011;Balaban et al, 2015;Huang et al, 2017) z ostatnich lat w szerokim zakresie dotyczą stosowania polielektrolitów hydrofilowych z grupami aminowymi. Polimery z grupami aminowymi, głównie pierwszorzędowymi, które są bardziej reaktywne niż polimery z grupami amidowymi, można na wiele sposobów modyfikować chemicznie, otrzymując związki o różnych masach cząsteczkowych, gęstości ładunku i ich rozkładu wzdłuż łańcucha.…”

Study of a novel cross linked graft copolymer starch in water-based drilling fluid

“…In the process of drilling for oil and gas, drilling fluid is in direct contact with the formation and plays a vital role, which can be equivalent to the role of blood to the human body [1]. Such as (1) transporting drilling cuttings from the bottom of the well back to the surface, (2) cooling down the drilling tools, (3) equilibrating the pore pressure of the formation, (4) reducing the coefficient of friction between the drilling tools and the wellbore, (5) forming a compact filter cake to prevent the filtrate of drilling fluid from penetrating into the formation, and (6) improving the recovery rate of reservoir stratum permeability [2,3]. Generally, drilling fluids can be divided into three categories: water-based drilling fluid (WBDF), oil-based drilling fluid (OBDF), and synthetic-based drilling fluid (SBDF) [4].…”