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. A plated through hole is a hole in the pcb thats plated all the way through the board. You can create assemblies using bottomup design, topdown design, or a combination of both methods. 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. It consists of a string below the drill pipe in a drill string. Do not run jar or accelerator in the neutral point zone. Pcb design for manufacturability guidelines altron inc. We have included useful information about the rotary shouldered connections pins and. Bha components consists of various types of tools such as stabilizers, crossover subs, and bull noses. Bottom hole assembly halliburton energy services, inc. Plcc packages are not to be placed on the solder side of the board on mixed technology boards. These include plated through hole components, or pth components. Attach the switching power supply unit to the bottom as show on the diagram to the left button switch at the bottom right.
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. The bottomhole assembly bha is the component of the drill string that includes the core bit, outer core barrel, various subs, and the drill collars. 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. Build your own clone green pony kit instructions warranty. A bha resides in the drill string above the drill bit and below the. The bha component is determined by the application. Oftentimes the assembly includes a mud motor, directional drilling and measuring equipment, measurementswhiledrilling tools, logging whiledrilling tools and other specialized devices. Exporting a pcb design or footprints from easyeda is very similar to exporting a schematic or a symbol. 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. The balloons are placed as described above, and in an open area of the paper. You may do so in any reasonable manner, but not in. Factors that affect pcb assembly yields could be classified into several main categories including.
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. 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. Assembly components inventor 2016 autodesk knowledge network. Nov 08, 2014 bottom hole assembly components the bottom hole assembly is the portion of drill string below the drill pipes. This document shows the location of the hole where the inner wall dont need to be metallized. Pcb components use these holes to pass a signal from one side of the board to the. Assembly components can be individual parts or subassemblies that behave as a single unit. The assembly can consist of drill collars, subs such as stabilizers, reamers, shocks, hole openers, and the bit sub and bit. May 01, 2017 starting at the bottom, obviously, the bit is the first and most important part of the bottom hole assembly bha. Bottomhole assembly bha is a complex combination of several drilling tools including directional drilling assembly. Starting at the bottom, obviously, the bit is the first and most important part of the bottom hole assembly bha. The present invention provides a bottom hole assembly bha for. Design and drawing of bottom hole assembly design and. The bottom hole assembly bha is a portion of the drillstring that affects the trajectory of the bit and, consequently, of the wellbore.
The bottomhole assembly is the portion of the drilling assembly below the drill pipe. The packed hole assemblies contain three to five stabilizers properly spaced to maintain the angle. 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. Part number nominal size w x l x d load rating ansi tier approx. Downhole drilling assemblies are an expensive part of the drilling equipment. It is the lowest part of the drill string, extending from the bit to the drill pipe. This is the most complete system available with choices aplenty for the most experienced inspectors. The bottomhole assembly bha is the component of the drill string that includes the core bit, outer core barrel, various subs, and. 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. 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 assembly can consist of drill collars, subs such as stabilizers, reamers, shocks, holeopeners, and the bit sub and bit. Bottom hole assembly schlumberger technology corporation.
Pdf dynamics of the bottom hole assembly during drilling. The component number is the position of that component in the bha. Drilling bottomhole assembly dynamics rice university. 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.
Is your latch bolt to the left or right of your mounting plate. Tightly closing a well so that hydrocarbons cannot escape. 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. Play with the amount of hwdp between jar and accelerator to achieve this. Bottom hole assembly bha design for directional control.
Over the years, the bottomhole assembly has grown from one or two simple drill collars to quite a complex array of tools, stacking up above the bit about 500 to 1,000 ft 150 to 300 m. You can select to export in pdf, png or svg format. 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. It can be as simple as bit and drill collars or it can be very complex and made up. The drill pipe constitutes the majority of the drill string length. This is the most complete system available with choices aplenty for. 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. Document export pdf pngsvg you will open this dialog. Components, together as a group, that make up lower end of drillstring drill bit, drill collars, drill pipe and ancillary equipment. Hdd pilot hole operations are not unlike those involved in drilling a directional oil well. 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. For example, a singlepart base plate and a multipart air cylinder subassembly are both components when placed in an assembly. This file is licensed under the creative commons attributionshare alike 3.
The packedhole assemblies contain three to five stabilizers properly spaced to maintain the angle. The bottom hole assembly bha is the components used above the bit without taking in consideration the drill pipe. Oftentimes the assembly includes a mud motor, directional drilling and measuring equipment, measurementswhiledrilling tools, logging whiledrilling. Avoid having large changes in cross sectional area in the lower bha components, as. It can be as simple as bit and drill collars or it can be very complex and made up of multiple components. To ensure that they are always available when you open the assembly, add the paths for all components to the project for the assembly. 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. 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. 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 bha is attached to the bottom of a long string of pipe called the drill string. 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.
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. 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. Avoid having large changes in cross sectional area in the lower bha components, as this will scatter and reflect the jar impacts. 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. If a vibration dampening device is used in the packed. 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 twist, or lay, of the cable imparts a slight turning motion to the tools so the bit hits a new face with each stroke. 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. Soldering, clipping, cutting, stripping, or using any of the components in. It is designed for users with advanced soldering tools and skills. Pendulum bottom hole assemblies drilling procedures. Soldering, clipping, cutting, stripping, or using any of the components in any way voids this guarantee. Depending on the type of board under pcba, the board may include a variety of components beyond the usual smds. Bha components and performances linkedin slideshare.
The term is loosely applied to the assembled collection of the smuggler pool, drill collars, tools and drill bit. Installing electronic media storage components into lateral. The bha design objective for directional control is to provide the directional tendency that will match the planned trajectory of the well. Recommendations for board assembly of infineon leadless mems packages with open sensor port package description 1. 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. With the well flowing, the bottomhole assembly consisting of the overshot, seven. Introduction to casing iintroduction an oil and gas well is drilled in sections from the surface to the production zone. 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. 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. External catch fishing tools internal catch fishing tools. 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. 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. The assembly may be designed for slight build or drop tendency to counteract formation tendencies. Minimize bit stability problems from vibration, wobbling and jumping.
A bottom hole assembly bha is a component of a drilling rig. The components of a horizontal drilling rig used for pipeline construction are similar to those of an oil well drilling rig with the major exception being that a horizontal drilling rig is equipped with an inclined ramp as opposed to a vertical mast. Bottomhole assembly bha components trican well service. 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. 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. The bottom hole assembly bha is the component of the drill string that includes the core bit, outer core barrel, various subs, and. A method for selecting a bottomhole assembly, including performing a. You must solder the ic pins on the top surface and the rest of. Top assembly, read only, doesnt affect the pcb manufacture. 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. Mates create geometric relationships between assembly components. Bottomhole assembly article about bottomhole assembly by.
In parallel, a comprehensive assessment of existing concepts and techniques for addressing drillstring dynamics is undertaken. 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 assembly an overview sciencedirect topics. It is primary made up of drill collars, stabilizers and the bit. Printed circuit boards assembly pcba process pcbcart. Assembly components inventor 2016 autodesk knowledge. You can create assemblies using bottom up design, topdown design, or a combination of both methods. Bottom hole assembly bha is a component of a drill string that used to drill oil and gas wells. Left lay cable is used so that the twisting action tightens the.
The will be specified differently in the stock list. Pdf implementation of a bottomhole assembly program. Recommendations for board assembly of infineon leadless mems. 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. The following discussion presents the detailed structure of each component. Recommendations for board assembly of infineon leadless.
Build and commercial components are treated the same when assigning detail numbers. Complete pdf from an assembly drawing solidworks forums. 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. Minimize directional control problems by providing stiffness to the bottom hole assembly bha.
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