Bottomhole assembly article about bottomhole assembly by. Part number nominal size w x l x d load rating ansi tier approx. Hdd pilot hole operations are not unlike those involved in drilling a directional oil well. A bha resides in the drill string above the drill bit and below the. A bottom hole assembly bha is a component of a drilling rig. Bha components consist of varying tool types from stabilizers, cross over subs, torque reducers, float subs, float valves, bull noses, zbits, pony collars, and drill collars. The bottom hole assembly comprises an upper component, a lower component and a telescoping assembly disposed between the upper component and the lower component.
The bottomhole assembly must provide force for the bit to break the rock weight on bit, survive a hostile mechanical environment and provide the driller with directional control of the well. This is the most complete system available with choices aplenty for the most experienced inspectors. The assembly can consist of drill collars, subs such as stabilizers, reamers, shocks, holeopeners, and the bit sub and bit. This document shows the location of the hole where the inner wall dont need to be metallized. The term is loosely applied to the assembled collection of the smuggler pool, drill collars, tools and drill bit. It can be as simple as bit and drill collars or it can be very complex and made up of multiple components. Do not run jar or accelerator in the neutral point zone. If a vibration dampening device is used in the packed. It is the lowest part of the drill string, extending from the bit to the drill pipe. It hangs below the drill pipe and provides weight to the drill or core bit to induce the teeth to penetrate the formation, thereby drilling a hole or recovering core to meet the scientific. Comparison between throughhole assembly tha and surface mount assembly sma printed circuit board assembly pcba allows for tight bonding between bare pcbs and electronic components so that corresponding electrical functions will be fully implemented to finally contribute its own role to the reliable performance of electronic products it. Bha components consists of various types of tools such as stabilizers, crossover subs, and bull noses. You can create assemblies using bottom up design, topdown design, or a combination of both methods.
The increased stiffness on the bha from the added stabilizers keeps the drillstring from bending or bowing and forces the bit to drill straight ahead. Apr 14, 2020 when hole deviation has been dropped to an acceptable limit, the pendulum collars are removed and the packed hole assembly is again run above the bit. You may do so in any reasonable manner, but not in. Components, together as a group, that make up lower end of drillstring drill bit, drill collars, drill pipe and ancillary equipment. The bottom hole assembly bha is a key component of the drilling system, consisting of various components and tools including the drill bit itself which. The bha is attached to the bottom of a long string of pipe called the drill string. This is the most complete system available with choices aplenty for. We have included useful information about the rotary shouldered connections pins and. To ensure that they are always available when you open the assembly, add the paths for all components to the project for the assembly.
Soldering, clipping, cutting, stripping, or using any of the components in any way voids this guarantee. The twist, or lay, of the cable imparts a slight turning motion to the tools so the bit hits a new face with each stroke. In the diagram, these are stands of drill pipe which are 2 or 3 joints of drill pipe connected and stood in the derrick vertically, usually to. It consists of a string below the drill pipe in a drill string. The bottom hole assembly bha is the components used above the bit without taking in consideration the drill pipe. It is designed for users with advanced soldering tools and skills. The bha component is determined by the application. Exporting a pcb design or footprints from easyeda is very similar to exporting a schematic or a symbol. The assembly may be designed for slight build or drop tendency to counteract formation tendencies. Nov 08, 2014 bottom hole assembly components the bottom hole assembly is the portion of drill string below the drill pipes.
Build and commercial components are treated the same when assigning detail numbers. It is primary made up of drill collars, stabilizers and the bit. Plcc packages are not to be placed on the solder side of the board on mixed technology boards. The balloons are placed as described above, and in an open area of the paper.
A state of the art windows graphical user interface gui program has been developed to predict and design the bottomhole assembly bha performance for drilling. Recommendations for board assembly of infineon leadless mems packages with open sensor port package description 1. Starting at the bottom, obviously, the bit is the first and most important part of the bottom hole assembly bha. Bottom hole assembly halliburton energy services, inc. You can select to export in pdf, png or svg format. From assembly drawing the macro must look on all components and create one complete pdf fil with all drawings of components who is in the assembly. Soldering, clipping, cutting, stripping, or using any of the components in. The assembly can consist of drill collars, subs such as stabilizers, reamers, shocks, hole openers, and the bit sub and bit.
Pdf implementation of a bottomhole assembly program. Comparison between through hole assembly tha and surface mount assembly sma printed circuit board assembly pcba allows for tight bonding between bare pcbs and electronic components so that corresponding electrical functions will be fully implemented to finally contribute its own role to the reliable performance of electronic products it. It hangs below the drill pipe and provides weight to the drill or core bit to induce the teeth to penetrate the formation, thereby drilling a. Bottomhole assembly bha is a complex combination of several drilling tools including directional drilling assembly. Tightly closing a well so that hydrocarbons cannot escape. Minimize directional control problems by providing stiffness to the bottom hole assembly bha. A state of the art windows graphical user interface gui program has been developed to predict and design the bottom hole assembly bha performance for drilling. The drill pipe constitutes the majority of the drill string length. Assembly components inventor 2016 autodesk knowledge. Build your own clone green pony kit instructions warranty. The packedhole assemblies contain three to five stabilizers properly spaced to maintain the angle. In topdown assembly design, one or more features of a part are defined by something in an assembly, such as a layout sketch or the geometry of another part. It hangs below the drill pipe and provides weight to the drill or core bit to induce the teeth to penetrate the formation, thereby drilling a hole or recovering core to meet the scienti. Factors that affect pcb assembly yields could be classified into several main categories including.
The will be specified differently in the stock list. A method for selecting a bottomhole assembly, including performing a. Pendulum bottom hole assemblies drilling procedures. Downhole drilling assemblies are an expensive part of the drilling equipment. The component number is the position of that component in the bha. Printed circuit boards assembly pcba process pcbcart. At the same time, high tech components to monitor and control the direction as well as measuring systems for analysing drill rate and efficiency are also present and must be protected from the harsh conditions. The bottom hole assembly bha is the component of the drill string that includes the core bit, outer core barrel, various subs, and the drill collars. Left lay cable is used so that the twisting action tightens the. Oftentimes the assembly includes a mud motor, directional drilling and measuring equipment, measurementswhiledrilling tools, logging whiledrilling tools and other specialized devices. Pdf dynamics of the bottom hole assembly during drilling. The oem bottom hole assembly bha kit has been used since 1980 by both large and small inspection companies for inspection performed on and offshore. When an assembly contains smt components top and bottom and through hole components on top, the assembly requires an extra epoxy process to solder the bottom side smt components.
These bottom hole assmebly items are utilized in the drill string to achieve connection changes, regulate pressure, help guide the string, add or decrease the length. Bottomhole assemblies bottomhole assemblies introductory comments on bottomhole assemblies the title of this publication is drilling assembly handbook and most of the pages are devoted to the entire drilling assembly, from the swivel to the bit. The hole is drilled by rotating a bit and applying a downwar. Bottom hole assembly bha design for directional control. The packed hole assemblies contain three to five stabilizers properly spaced to maintain the angle.
The following discussion presents the detailed structure of each component. You must solder the ic pins on the top surface and the rest of. Introduction to casing iintroduction an oil and gas well is drilled in sections from the surface to the production zone. The assembly of drill pipe, sophisticated instruments and pipe called the bottomhole assembly, or bha, is the business end of the drilling rig. It is then only necessary to ream the length of the hole equal to the length of the pendulum collars prior to resuming normal drilling. Comparison between throughhole assembly tha and surface. Bit selection is a complicated issue that would take more space than i have here, but most drillers have a good idea what kind of bits to run, based on overall cost per foot.
The present invention provides a bottom hole assembly bha for connection to a drillstring for use in directing the path of a drill bit while rotary drilling, the bha comprising an apparatus for providing a modified cutting action of the bit in a predetermined portion of the hole, a stabilizer, and a flexible member interposed between the bit. Pcb design for manufacturability guidelines altron inc. Top assembly, read only, doesnt affect the pcb manufacture. Oftentimes the assembly includes a mud motor, directional drilling and measuring equipment, measurementswhiledrilling tools, logging whiledrilling. Installing electronic media storage components into lateral. The bottomhole assembly bha is the component of the drill string that includes the core bit, outer core barrel, various subs, and. Assembly components can be individual parts or subassemblies that behave as a single unit. When hole deviation has been dropped to an acceptable limit, the pendulum collars are removed and the packed hole assembly is again run above the bit. Bottomhole assembly an overview sciencedirect topics. This file is licensed under the creative commons attributionshare alike 3. These include plated through hole components, or pth components. Align the hole at the bottom left of the operation screen with the threaded hole of the aluminum profile on the right side of the base ba, secure with m5x8 screws, and use the allen key to tighten them. May 01, 2017 starting at the bottom, obviously, the bit is the first and most important part of the bottom hole assembly bha.
A mathematical model is proposed for studying the dynamic behavior of drillstrings, focusing on the lower section of the drillstring known as the bottom hole assembly or bha. Avoid having large changes in cross sectional area in the lower bha components, as. With the well flowing, the bottomhole assembly consisting of the overshot, seven. Avoid having large changes in cross sectional area in the lower bha components, as this will scatter and reflect the jar impacts. A drill string on a drilling rig is a column, or string, of drill pipe that transmits drilling fluid via the mud pumps and torque via the kelly drive or top drive to the drill bit. Assembly directions 939501285 rev b page 2 of 14 index section 1 pages 3,4,5,6 and 7 removal of drawers, rollout shelves, doors and components from a lateral file cabinet. Since several fishing tools are utilized to make a fishing bottom hole assembly, each tool enhances the performance of the others to provide the most effective solution for all types of well intervention and fishing operations. You can create assemblies using bottomup design, topdown design, or a combination of both methods. Complete pdf from an assembly drawing solidworks forums. Bha components and performances linkedin slideshare. The present invention provides a bottom hole assembly bha for.
Is your latch bolt to the left or right of your mounting plate. It can be as simple as bit and drill collars or it can be very complex and made up. Recommendations for board assembly of infineon leadless. Bottomhole assembly bha components trican well service. Recommendations for board assembly of infineon leadless mems. Jul 23, 1996 the present invention provides a bottom hole assembly bha for connection to a drillstring for use in directing the path of a drill bit while rotary drilling, the bha comprising an apparatus for providing a modified cutting action of the bit in a predetermined portion of the hole, a stabilizer, and a flexible member interposed between the bit. Play with the amount of hwdp between jar and accelerator to achieve this.
Assembly materials pcbs and components process methods resulting joint quality printed circuit board pcb or pwb fabrication is one critical aspect of the electronics manufacturing that often is a grey area for most smt wave assembly. A mathematical model is proposed for studying the dynamic behavior of drillstrings, focusing on the lower section of the drillstring known as the bottomhole assembly or bha. Design and drawing of bottom hole assembly design and. Drilling bottomhole assembly dynamics rice university. In parallel, a comprehensive assessment of existing concepts and techniques for addressing drillstring dynamics is undertaken. The bottom hole assembly bha is a portion of the drillstring that affects the trajectory of the bit and, consequently, of the wellbore. The bottom hole assembly bha is the component of the drill string that includes the core bit, outer core barrel, various subs, and. The bha design objective for directional control is to provide the directional tendency that will match the planned trajectory of the well. The bottom hole assembly bha is a key component of the drilling system, consisting of various components and tools including the drill bit itself which operate at the bottom of the wellbore and physically drill the rock.
The bottomhole assembly is the portion of the drilling assembly below the drill pipe. Document export pdf pngsvg you will open this dialog. Depending on the type of board under pcba, the board may include a variety of components beyond the usual smds. Assembly components inventor 2016 autodesk knowledge network.
A plated through hole is a hole in the pcb thats plated all the way through the board. Attach the switching power supply unit to the bottom as show on the diagram to the left button switch at the bottom right. For example, a singlepart base plate and a multipart air cylinder subassembly are both components when placed in an assembly. In the air drilling process, the prebent pendulum bottom hole assembly pbpbha has excellent performance in controlling the well deviation and improving the wellbore quality, but the mechanism. Bottom hole assembly schlumberger technology corporation.
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