Filter cake formation and water losses in deep drilling muds.

by Wolf von Engelhardt in Urbana

Written in English
Cover of: Filter cake formation and water losses in deep drilling muds. | Wolf von Engelhardt
Published: Pages: 23 Downloads: 68
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Subjects:

  • Filters and filtration.

Edition Notes

StatementTranslated by Paul A. Witherspoon.
Classifications
LC ClassificationsQE105 .A45 no. 191
The Physical Object
Pagination23 p.
Number of Pages23
ID Numbers
Open LibraryOL209517M
LC Control Numbera 55009018
OCLC/WorldCa2227175

The Handling and Treatment of Water-Base Drilling Muds Robert B. Allred Handling and Treatment of Oil-Base Drilling Muds Warren C. McMordie, Jr., Ph.D. Onshore Disposal of Drilling Muds L. R. Louden, Ph.D. Offshore Disposal of Drilling Fluids and Drilled Up Solids William J. McGuire, Ph.D. Environmental Effects of Drilling Muds. Oil based drilling muds contain a mixture of an oil-base fluid and an aqueous-brine fluid and the typical ratio is approximately 3. Oil-based mud systems are widely used in many deep-water environments, particularly systems where unconsolidated sediments and swelling clay minerals are common. MainFile Size: KB.   (A) SAND CONTENT DETERMINATION: Theory Periodic sand content determination of drilling mud is desirable, because excessive sand may result in the deposition of a thick filter cake on the wall of the hole, or may settle in the hole about the tools when circulation is stopped, thus interfering with successful operation of drilling tools or setting of casting. Chapter 6 - The Filtration Properties of Drilling Fluids, Pages Chapter 7 - The Surface Chemistry of Drilling Fluids, Pages Chapter 8 - Hole Stability, Pages Chapter 9 - Drilling Problems Related to Drilling Fluids, Pages Chapter 10 - Completion, Reservoir Drilling, Workover, and Packer Fluids, Pages

Gains will be driven by a rise in rig counts, more use of well stimulation and enhanced oil recovery (EOR) methods and more deepwater drilling and production. Working Guide to Oil Field Chemicals is a guide to the benefits and trade-offs of numerous oil field chemicals used in the petroleum and natural gas industry today. Composition and Properties of Drilling and Completion Fluids, Fifth Edition, covers the fundamental principles of geology, chemistry, and physics that provide the scientific basis for drilling fluids material for drilling, logging, and production supervisors and engineers exlains how the choice of a drilling fluid and proper maintenance can profoundly . Though the accumulation of filter cake and filtrate invasion is directly related to the formation damage, if the drilling fluid is capable of forming an impermeable filter cake opposite to the producing zone, it will reduce the filtration loss and hence the formation damage. Since the initial filtrate loss, known as the spurt loss, is usually Cited by: 1.   Filter cakes formed on well bore walls during the drilling process need to be ruptured to start oil production. In this study, the failure of external filter cakes from water-based drilling fluids was investigated when the damage incurred by the formation is due almost entirely to brine and polymer invasion during by: 5.

  save Save Mud Loss Course Powerpoint-RJY Feb For Later. 1 1 upvote, setting properties Cement systems that gel up Thixotropic systems Gel or set up instantaneously due to chemical reactions Formation of filter cake assisted by lost circulation prevention additives. Drain all water and muds from pumps, lines and sumps.5/5(1). 4 contamination, improves filter cake quality through reduction of thickness and permeability, reducing wall sticking tendencies, and stabilizing rheology properties Tannin is highly effective in controlling the ph levels, thus being a great addition in lowering the corrosions in drilling pipes and their pumps. Materials Ph Meter Stop Watch Mud Sample Graduated Cylinder Water . The hydration of the clays can only be overcome by using non water-based muds, or partially addressed by treating the mud with chemicals which will reduce the ability of the water in the mud to hydrate the clays in the formation. These muds are known as inhibited muds. While drilling, the rock cutting procedure generates a lot of heat which can Cited by: 8. Drilling mud compositions depend entirely on what is required of it. As previously stated there is oil-based and water-based mud. There is also pneumatic drilling fluid which requires specialised equipment so is far more expensive. Find a comprehe.

Filter cake formation and water losses in deep drilling muds. by Wolf von Engelhardt Download PDF EPUB FB2

Filter cake formation and water losses in deep drilling muds. Urbana, Ill.: Illinois State of Geological Survey, (OCoLC) Material Type: Government publication, State or province government publication: Document Type: Book: All Authors / Contributors: Wolf von Engelhardt; Illinois State Geological Survey.

I6c no c.l STATEOFILLINOIS ON,Governor DEPARTMENTOFREGISTRATIONANDEDUCATION ,Director STATEGEOLOGICALDIVISIONOFTHESURVEY The residue deposited on a permeable medium when a slurry, such as a drilling fluid, is forced against the medium under a pressure. Filtrate is the liquid that passes through the medium, leaving the cake on the medium.

Drilling muds are tested to determine filtration rate and filter-cake properties. Cake properties such as cake thickness, toughness, slickness and permeability are. The spurt loss, cumulative fluid loss, cake thickness and porosity were measured and, using a modified static filtration equation, the cake resistance and compressibility were calculated.

The results clearly illustrate the highly compressible nature of filter cakes formed from drilling by: 9. The model could be useful to provide drilling engineers insight on the filter cake formation and drilling fluid flow pattern and give guidelines to optimize the filter cake as field experimental.

Filtration from a bore hole full of drilling mud, not circulating, but under pressure for extended time periods, is also discussed. The second part describes filter loss to permeable formations from beneath a drilling bit where filter cake has no opportunity to develop appreciable by: It aims mainly to, 1) study the effect of drilling fluids on the filter cake properties, filtrate loss and formation damage, 2) study the characteristics of filter cake such as thickness, porosity and permeability, and 3) describe the mineralogy and the chemical composition of the filter by: Investigation of mud density and weighting materials effect on drilling fluid filter cake properties and formation damage.

was constructed to determine the CTEs of the drilling muds. Results. Drilling muds are divided into two general types: water-based drilling muds and oil-based drilling muds. Each type needs special additives which are discussed in this chapter.

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.

Cleanup of Filter Cake Formed by Drilling and Completion Fluids: Removal of internal and external filter cake formed on rock formations during well production [Ajay Suri] on *FREE* shipping on qualifying offers. The flow initiation pressure (FIP) is used as an estimate of the differential pressure (between the reservoir and the well) required to initiate production of.

¾ Fresh or saturated brine water can be used to drill hard, compacted and near-normally pressured formation Native mud ¾ Water pumped down letting it react with formation containing clay or shale ¾ Water dissolves clay and return to surface as mud ¾ Characterize by high solid content and high filter loss resulting in thick filter cakeFile Size: KB.

Mud cake filter is one equipment of drilling waste management ’s squeezes out fluid from drilling waste which precessed by solids control system and leave mud cakes. At the start of filtration in a mud cake filter some solid particles enter the pores of the medium and are immobilized, but soon others begin to collect on the septum surface.

remaining mud and using extreme care save the filter paper and depositedcake with a minimum of disturbance to the cake. Wash the filter cake on the paper with a gentle stream of water or with dieseloil if oil mud is being tested.

Measure and report the thickness of the filter cake to the nearest 1/32 inch ( millimeter). Near wellbore mud filtrate and fines invasion during drilling operations and the resulting formation damage and filtercake formation are amongst the most important problems involving the petroleum reservoir exploitation.

This chapter reviews the fundamental processes and their mathematical formulation necessary to develop models that can be used for assessment of. Drilling fluids are a mixture of solids, liquids, and chemicals, with the liquid being the continuous phase.

To stabilize the wellbore, the drilling fluid forms a filter cake, which bridges the formation face. Filter cake builds up over the face of the porous medium and filtrate invades the formation (Civan ; a, b).

When the. The increasing oil demand around the world along with the depletion of onshore and shallow water oil reserves have forced the oil companies moving into the development of deepwater subsea hydrocarbon reservoirs.

Drilling fluids play a key role in all drilling operations, but they get a greater relevance in deepwater environments where the technological challenges of drilling Cited by: 3. water-based drill-in fluid filter cake.

The literature on field use and laboratory evaluations is referenced and lessons learnt are highlighted. The importance of filter cake cleanup; why cleanup is required Drill-in fluids (DIFs) are designed to deposit File Size: KB. In geotechnical engineering, drilling fluid, also called drilling mud, is used to aid the drilling of boreholes into the earth.

Often used while drilling oil and natural gas wells and on exploration drilling rigs, drilling fluids are also used for much simpler boreholes, such as water of the functions of drilling mud is to carry cuttings out of the hole.

The design of drilling fluids is very important for the drilling operation success. The rheological properties play a key role in the performance of the drilling fluid.

Therefore, studying the mud rheological properties of the water-based drilling fluid based on bentonite is essential. The main objectives of this study are to address the effect of pH changes on the rheological and filtration Author: Hany Gamal, Salaheldin Elkatatny, Salem Basfar, Abdulaziz Al-Majed.

filtration greatly affect cake build-up and filtrate volumes and that reduced filtrate volumes can be achieved when steady state is achieved rather than unsteady state filtration process.

Keywords: wells, drilling fluids, filtration theory, mud cakes, filtrate volume, approximate Size: KB. Types of Drilling Fluids Composition of Drilling Muds Properties of Drilling Muds Functions of Drilling Muds Laboratory/Field Testing 3. Liquids • Water-base muds (WBM) • Oil-base muds (OBM) Gases • Air • Natural gas Gas-Liquid mixtures • Foam (mostly gas) • Aerated water (mostly water) 4.

Home Support & Resources Drilling Industry Glossary Mud Cake Drilling Industry Glossary micro-annulus mouse hole mud mud cake mud ditch mud engineer mud line mud magnet mud pump mud report mud tanks mud weight.

Mud Cake. The sheath of mud solids that forms on the wall of the hole when liquid from mud filters into the formation. Also called. Civan () and Ramakrishnan and Wilkinson () modeled the radial invasion of water-based drilling muds into near-wellbore formation in oil reservoirs. Ramakrishnan and Wilkinson () neglected the effects of the fluid compressibility, capillary pressure, gravity, salt dispersion, the porosity variation, and fine particle invasion.

Transport of particle suspensions in oil reservoirs is an essential phenomenon in many oil industry processes. Solid and liquid particles dispersed in the drilling fluid (mud) are trapped by the rock (porous medium) and permeability decline takes place during drilling fluid invasion into reservoir resulting in formation damage.

The formation damage due to mud filtration is explained by. @article{osti_, title = {Drill-in fluid reduces formation damage, increases production rates}, author = {Hands, N and Kowbel, K and Maikranz, S and Nouris, R}, abstractNote = {A sodium formate drill-in fluid system reduced formation damage, resulting in better-than-expected production rates for an off-shore Dutch development well.

Programmed to optimize. • Form a low permeability, thin and tough filter cake across permeable formations. The performance of these functions depends upon the type of formation being drilled and the various properties of the drilling fluid.

Often, compromises are necessary due to a va-riety of factors. The selection and design of a particular drill-File Size: KB. Barite sag is a challenging phenomenon encountered in deep drilling with barite-weighted fluids and associated with fluid stability.

It can take place in vertical and directional wells, whether in dynamic or static conditions. In this study, an anti-sagging urea-based additive was evaluated to enhance fluid stability and prevent solids sag in water-based fluids to be used in drilling.

Baker Hughes INTEQ. Drilling Engineering Workbook A Distributed Learning Course H Rev. December Baker Hughes INTEQ Training & Development W.W. Thorne Houston, TX United. filter cake and the history of the process imposed by the fluid flow on the solid matrix.

In other words, the characteristics of filtration and mud cake buildup are affected by many factors as: drilling fluid’s properties, fluid flow configuration, rock properties and operation conditions (Massarani, ).

Alteration of the far-field or virgin characteristics of a producing formation, usually by exposure to drilling water or solid particles in the drilling fluids, or both, tend to decrease the pore volume and effective permeability of the producible formation in the near-wellbore region.

At least two mechanisms are at work. First, solid particles from the drilling fluid physically. Effect of Temperature on Scale Formation around the Wellbore and Hole Cleanup for Reconditioned Drilling Mud Seteyeobot Ifeanyi1, Oyinkepreye D.

Orodu1, Efeoghene Enaworu1 and Olawole Kunle Patrick2 1Covenant University, Ota, Nigeria. 2Salford University, Salford M5 4WT, UK. Abstract Oil based muds are very complex fluids composed from water. The filter paper used in the test is so different in nature from the granular media in the trench wall that different methods of filter cake formation can easily occur in each.

A slurry which performs well against a fine-grained porous material may thus be quite inadequate to form a surface filter cake against ground of permeability to water of.The effects of the solid concentration, pressure and shear rate on the filter cake characteristics and the erodability were investigated.

For static filtration experiments, all tests were conducted for two hours and the spurt loss, the filter cake thickness, the ratio of wet to dry cake mass and the cumulative filtrate volume against time were.