Well completion (cơ sở kỹ THUẬT dầu KHÍ SLIDE TIẾNG ANH)

Vietnam National University - Ho Chi Minh City University of Technology Course Introduction to Petroleum Engineering Presenter: Trần Nguyễn Thiện Tâm Falcuty: Geology & Petroleum Engineering Department: Drilling - Production Email: trantam2512@hcmut.edu.vn 3/29/21 Introduction to Petroleum Engineering Chapter 4b Well Completion 3/29/21 Introduction to Petroleum Engineering Contents  Casing  Cementing  Perforation  Types of well completion  Production equipment 3/29/21 Introduction to Petroleum Engineering Learning outcomes 3/29/21 Introduction to Petroleum Engineering Introduction Once a well has been drilled, specialized hardware and techniques are required to produce the well This discipline covers various technologies used to bring hydrocarbons from the formation to the surface 3/29/21 Introduction to Petroleum Engineering Casing Steel pipe cemented in place during the construction process to stabilize the wellbore 3/29/21 Introduction to Petroleum Engineering Casing The casing forms a major structural component of the wellbore and serves several important functions: preventing the formation wall from caving into the wellbore, isolating the different formations to prevent the flow or crossflow of formation fluid, and providing a means of maintaining control of formation fluids and pressure as the well is drilled 3/29/21 Introduction to Petroleum Engineering Casing The casing string provides a means of securing surface pressure control equipment and downhole production equipment, such as the drilling blowout preventer (BOP) or production packer Casing is available in a range of sizes and material grades 3/29/21 Introduction to Petroleum Engineering Conductor pipe The casing string that is usually put into the well first, particularly on land wells, to prevent the sides of the hole from caving into the wellbore 3/29/21 Introduction to Petroleum Engineering Surface casing A large-diameter, relatively low-pressure pipe string set in shallow yet competent formations for several reasons 3/29/21 Introduction to Petroleum Engineering 10 Primary cementing process Releasing bottom wiper plug 3/29/21 Introduction to Petroleum Engineering 50 Primary cementing process Pumping of spacer 3/29/21 Introduction to Petroleum Engineering 51 Primary cementing process Pumping of cement slurry 3/29/21 Introduction to Petroleum Engineering 52 Primary cementing process Releasing top wiper plug 3/29/21 Introduction to Petroleum Engineering 53 Primary cementing process Displacing with displacement fluid (generally mud) until the top plug lands on the float collar 3/29/21 Introduction to Petroleum Engineering 54 Perforation The communication tunnel created from the casing or liner into the reservoir formation, through which oil or gas is produced The most common method uses jet perforating guns equipped with shaped explosive charges However, other perforating methods include bullet perforating, abrasive jetting or high-pressure fluid jetting 3/29/21 Introduction to Petroleum Engineering 55 Jet perforating The use of shaped explosive charges to create perforation tunnels The explosive charge produces an extremely high-pressure jet that penetrates the casing or liner to shoot into the reservoir formation The shaped charges are contained in a perforating gun assembly that can be conveyed on wireline, tubing or coiled tubing, depending on the application and the wellbore conditions 3/29/21 Introduction to Petroleum Engineering 56 Perforating gun A device used to perforate oil and gas wells in preparation for production Containing several shaped explosive charges, perforating guns are available in a range of sizes and configurations The diameter of the gun used is typically determined by the presence of wellbore restrictions or limitations imposed by the surface equipment 3/29/21 Introduction to Petroleum Engineering 57 Perforating charge 3/29/21 Introduction to Petroleum Engineering 58 Perforating charge 3/29/21 Introduction to Petroleum Engineering 59 Perforation 3/29/21 Introduction to Petroleum Engineering 60 Perforation 3/29/21 Introduction to Petroleum Engineering 61 Types of well completion      Open-hole completion Uncemented liner completions Cased and cemented completions Perforated completion Multi-zone completions 3/29/21 Introduction to Petroleum Engineering 62 Summary 3/29/21 Introduction to Petroleum Engineering 63 Chapter The End 3/29/21 Introduction to Petroleum Engineering 64 ...Chapter 4b Well Completion 3/29/21 Introduction to Petroleum Engineering Contents  Casing  Cementing  Perforation  Types of well completion  Production equipment 3/29/21... pipe The casing string that is usually put into the well first, particularly on land wells, to prevent the sides of the hole from caving into the wellbore 3/29/21 Introduction to Petroleum Engineering... conventional well designs include a production liner set across the reservoir interval This reduces the cost of completing the well and allows some flexibility in the design of the completion in