Water based drilling mud pdf

Newpark is recognized as the industry leader in the development of awardwinning water based drilling fluids. Amoco production company drilling fluids manual proprietary for the exclusive use of amoco production company and other wholly owned subsidiaries of amoco corporation. Office of water mail code 4303 washington, dc 20460 epa821b000 december 2000 epa development document for final effluent limitations guidelines and standards for synthetic based drilling fluids and other nonaqueous drilling fluids in the oil and gas extraction point source category. January 2005 effects of water based drilling muds abstract water based drilling muds wbm consist of fresh or salt water containing a weighting agent usually barite. Drilling fluids a drilling fluid mud in which water or saltwater is the major liquid phase as well as the wetting external phase. Synthetic based drilling mud spills definition drilling muds are used to lubricate and cool the drill bit, control reservoir pressure, and transport drill cuttings back to the surface during oil exploration and development. The types of drilling fluids are briefly described in the following sections freshwater muds are generally lightly treated or untreated muds having a liquid phase of water, containing small concentrations of salt, and having a ph ranging from 8. Quantitative comparison of processes of oil and water based mud. The most widely used name is mud or drilling mud and both these terms will be used interchangeably throughout this chapter. Inhibitive properties enable minimal drilling issues to be encountered, enabling sustained higher rop. This is the most common drilling mud used in oil drilling. An introduction to the land application of drilling mud in oklahoma the initial mud prior to use in drilling contains several chemical additives.

Under dynamic conditions, the corrosion of various drilling fluids increased significantly. For economic and environmental reasons, oil and synthetic based muds are usually cleaned and recirculated though some muds, particularly water based muds, can be discharged into the surrounding. Water, oil, and gas based muds can all be used, with products ranging from true muds made with materials like bentonite clays to synthetic drilling fluid. Improving the rheological properties of water based mud. As drilling in directional and extendedreach wells continues to gain popularity, high torque and drag become increasingly important issues. Refined, bleached and deodorized coconut oil rbdco, transesterified palm kernel oil transpko and interesterified palm kernel oil interpko. Times experimental investigation of rheological properties.

Initially, a 70 pcf water based mud was prepared, and after adding three nps, it. Accidental release measures stop leak if without risk. Introduction international association of drilling. High performance waterbased drilling fluid for horizontal well drilling of the cline shale in the permian basin summary this high performance waterbased drilling fluid provided the solution to potential problems often encountered drilling the cline shale and proved that water based drilling fluid is competitive to oil based drilling fluids in. Quantitative comparison of processes of oil and waterbased mud. By eliminating the water phase, the alloil drilling fluid can preserve shale stability throughout the interval.

Whether youre considering the environment, the reservoir, or reducing mud. Environmentally friendly waterbased drilling fluid for. However, drilling fluids that are formulated with diesel or synthetic based oil and no water phase are used to drill long shale intervals where the salinity of the formation water is highly variable. Hal today announced the release of barashale lite fluid system, a high performance water based fluid. General categories of water base muds are fresh water, seawater, salt water, lime, potassium and silicate. Drilling mud is pumped down the hollow drill pipe to the drill bit, where it exits the pipe and then is flushed back up the borehole to the surface. Quantitative comparison of processes of oil and water. We engineer water based muds that reduce overall cost and environmental impact. Central to this development is our respect for the environment, which is an ongoing driving force behind newpark breakthroughs, such as the deepdrill and evolution systems. Baso4, clay or organic polymers, and various inorganic salts, inert solids, and organic additives to modify the physical properties of the mud so that it functions optimally. A water base drilling fluid is one that has water as its continuous or liquid phase.

The most basic water based mud systems begin with water, then clays and other chemicals are incorporated into the water to create a homogeneous blend resembling something between chocolate milk and a malt depending on viscosity. Drilling cost optimization has always been an important issue in the petroleum industry. Meaning, pronunciation, translations and examples log in dictionary. In the beginning of the 1980s, the oil companies in the north sea began using oilbased drilling fluids to obtain faster and safer drilling operations. Recommended practice for laboratory testing of drilling fluids. A drilling fluid in which water or saltwater is the major liquid phase as well as the wetting external phase.

High performance polyamine drilling fluid system inhibition. In 1982, the continue reading from oilbased mud to water. Improving the rheological properties of water based mud with. Compared to other types of drilling mud, water based. Water based muds have recognized the most broadly employed muds in the drilling operations because of their minimum cost and undesirable influence on the environment xie and liu, 2017. Neff v may 25, 2010 table 39 concentration of hydrocarbons in wbm and cuttings, point arguello. In this paper, we analyzed influence of water based drilling fluid on shale strength and failure mode by mechanics experiment. Water based fluid wbfs, oil based fluids obfs and synthetic based. In these types of drilling fluid systems, oil becomes the continuous phase. In this type of oilfield emulsion, oil is present as a continuous phase or in large amount and water is present in the dispersed phase in low amounts of approximately 2% to 5%. Liquid waterbased mud water base mud mixed and ready to ship to your well site 247.

Types of drilling fluids drilling fluids netwas group oil. Types of drilling mud water base mud oil base mud emulsion mud. To study the effects of the mud additives on water based drilling fluid, an experimental procedure was. A simple water based mud for horizontal drilling and some vertical operations consists of clay bentonite dispersed into water. Pdf potential evaluation and optimization of natural. Types of mud, silicate mud, formate mud in this video, we discussed.

So, emulsion mud can be defined as that category of water based drilling fluids to which oil is added. Water based drilling fluid systems water based mud. However, this formulation has a defect in that for it to perform optimally, electrolytes must be present. This chapter deals with compositions for drilling muds and special chemicals used for drilling muds. Oil based mud is an oilfield emulsion which is used as a drilling fluid while performing drilling operations.

An introduction to the land application of drilling mud in. The operator was looking for a fluid that provided high low. Drilling fluids have a number of alternative names, acronyms and slang terms used within the industry. Pdf pah composition of water based drilling mud and drill.

The influence of waterbased drilling fluid on mechanical. When water based drilling fluid contacts formation rock, it causes the propagation of crack and invasion of drilling fluid, which decrease shale strength and cause wellbore instability. The oil becomes the dispersed phase and water becomes the continuous phase and invert emulsion mud can be defined as oil based drilling fluids to which water is added. Rheology is the science of deformation and flow of matter. Aqueous drilling fluids are generally dubbed water based muds wbms, while nonaqueous drilling fluids nafs are often referred to as oil based muds obms or synthetic based muds sbms.

This standard provides procedures for the laboratory testing of both drilling fluid materials and drilling fluid physical, chemical and performance properties. The water based mud containing nanoparticles can be reconditioned and reused during drilling problems is compared with oil based drilling fluid. These nondispersed fluids show similar performance to invert emulsion fluids but maintain all the benefits of a water based fluid. High performance system promotes increased rates of penetration the unique chemistry of baroids performadril waterbased drilling system provides for a high degree of clay control, wellbore stability, performance based rates of penetration, low coefficients of friction and rheological control over a wide range of temperatures. The experimental results showed that high temperature accelerated corrosion. Waterbased mud definition and meaning collins english. Selecting the most appropriate model for rheological. Drilling mud selection is a function of the behaviour of the formation to be drilled johannes, 2011. The most widely used name is mud or drill ing mud and both these terms will be used interchangeably throughout this chapter. Newpark is recognized as the industry leader in the development of awardwinning waterbased drilling fluids. Waterbased mud is a type of drilling mud consisting mainly of water, which has additives to modify it and make it more effective. Water base mud mixing plants at all three mcada sites.

Moreover, buyback policies for the application of this drilling mud may cause them a wonderful replacement in conditions where the oil based drilling fluid used. Highperformance water based systems are very low in colloidal content contributing to high rates of penetration. It is recommended from the results to keep the ph of water based drilling fluid based on bentonite in the range of 9 to 10 as it provides the optimum mud rheological and filtration properties. Dike spill area and do not allow product to reach sewage system or surface or ground water. Flodrill for the drilling industry snf holding company. Pdf pah composition of water based drilling mud and. An introduction to the land application of drilling mud in oklahoma the initial mud prior to use in drilling contains several. Performadril waterbased drilling system halliburton. Comparative analysis of barite and hematite used in water. Mud engineering this chapter covers the following items. Drilling fluid buoyancy supports part of the weight of the drill string or casing. Lupton 20122015 mcada drilling luids quality service and equipment since 1989 were here to help. In order to save costs and create new markets for local materials, detarium microcarpum also known as ofor and food gum cissus populnea powders were evaluated. It is applicable to both waterbased and nonaqueous drilling fluids, as well as the base or makeup fluid.

Corrosion and its inhibition in waterbased drilling fluid. These may include bentonite clay soil mineral, sodium carbonate, lime, barium sulfate, lignite, and loss circulation materials such as ground peanut shells, mica. Pdf novel lubricants for waterbased drilling fluids. Drilling fluids or drilling muds have several functions, including carrying bore cuttings to the surface, cooling and lubricating the drill string and controlling subsurface pressures. List any five 5 very important functions of the drilling fluid. Mud conditioning equipment function of drilling mud cool bit and its teeth. Corrosion and its inhibition in water based drilling fluid used in onshore oilfied 457. Waterbased mud is a type of drilling mud consisting mainly of water, which has additives. Onshore drilling fluids baker hughes, a ge company. Trip halliburton introduces water based drilling fluid for unconventional and mature plays halliburton nyse. Sep 19, 2017 a complete replacement of oilbased mud with other mud types provides the largest reduction in discharges of oilcontaminated cuttings to the sea compared to any other solutions.

The fluid is the mud in which water is the continuous phase. Water base muds drilling equipment netwas group oil. Introduction iadc international association of drilling. The type of fluid base used depends on drilling and formation needs, as well as the requirements for disposition of the fluid after it is no longer needed. Drilling mud is a mixture of clay, water, weighting material, and chemicals, used to flush cuttings from the drill bit to the surface. Pah composition of water based drilling mud and drill cuttings in the offshore region, east coast of india. Obms are based on nafs that are distilled from crude oil.

This is particularly true for water based muds wbm. It is applicable to both water based and nonaqueous drilling fluids, as well as the base or makeup fluid. From oilbased mud to waterbased mud control drilling solids. The buoyancy factor is used to relate the density of the mud displaced to the density of the material in the tubulars. Absorb with inert material such as sand, soil, or vermiculite. Results of mud properties test water based mud density, viscosity, ph room temp. The three major types of drilling mud, mostly used in drilling operations, are water based drilling mud, oil based drilling mud, and synthetic based drilling mud.

Various types of drilling fluids, such as water based mud wbm, oil based mud obm, and synthetic based mud sbm, are being classified and used based on their behavior during the drilling. Comparative analysis of barite and hematite used in water based drilling fluid pet petro chem eng j comparative analysis of barite and hematite used in water based drilling fluid prabhat ranjan and adityam dutta. Each type needs special additives which are discussed in this chapter. There are specific chemicals that can be used in water based drilling fluids that alone can be corrosive and toxic, such as hydrochloric acid. Quantitative comparison of processes of oil and waterbased. Drilling fluids are often classified into two groups. Pdf formulation of waterbased drilling fluid using. Water based drilling fluid has very little toxicity, made from water, bentonite and barite, all clay from mining operations, usually found in wyoming and in lunde, telemark. Water based mud is a type of drilling mud consisting mainly of water, which has additives. This engineer determines the correct viscosity level for the drilling mud, and adjusts factors such as density of the mud as well. Progressing cavity pumps, downhole pumps and mudmotors, 2005. Drilling mud, also referred to as drilling fluid, is used to clear the hole of debris created during the drilling process, to cool down the. The composition includes water, lassenite, a heavyweight additive, a viscosifier, a dispersant and at least one of a set activator, a fluid loss control additive and a. High performance waterbased drilling fluid for horizontal.