Complete pdf from an assembly drawing solidworks forums. When you click on a pdf from a dropdown list, you will be presented the option of. Introduction the drillstring design is the mechanical linkage connecting the drillbit at the bottom of the hole to the rotary drive system on the surface. 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. The bottom hole assembly bha is a portion of the drillstring that affects the trajectory of the bit and, consequently, of the wellbore. 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. The drilling assembly handbook is broken down into eleven 11 major sections, as described in the table of contents. Therefore, pathagoras is capable of pdf assembly as well as document assembly. The lower portion of the drillstring, consisting of from the bottom up in a vertical well the bit, bit sub, a mud motor in certain cases, stabilizers, drill collar, heavyweight drillpipe, jarring devices jars and crossovers for various threadforms. They all want to make hole and drill a usable hole to td as soon as possible. Comparison between throughhole assembly tha and surface. The assembly hole command lets you create holes going thru different parts.
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. Pdf implementation of a bottomhole assembly program. Introduction the drillstring design is the mechanical linkage connecting the drillbit at the bottom of the hole to. Design and drawing of bottom hole assembly design and. I have an assembly aircondtion unit of some sheet metal. Also included are a cutter element, method of designing a bottom hole assembly as well as method of designing a drill bit. This is the most complete system available with choices aplenty for the most experienced inspectors. Bha components and performances linkedin slideshare.
Introduction to bottom hole assembly bha post a comment. Included material may or may not be applicable to other hardware andor software platforms. Bottom hole assemblies provisory 06 dec 96 confidential directional drilling 101 10 bottom hole assemblies about this chapter the design of the rotary bottom hole assembly bha is, together with orientation, the most critical part of the dd job. Bottomhole assembly bha design purpose components assemblies. Determination of drill collar and or hwdp length 4. Pendulum bottom hole assemblies drilling procedures. Considered assembly of the lower part of drilling string while analysing possible position of drilling string in the hole, special elaboration of lateral forces that occur in contact points of bent drilling string with wall should take. This means that the smaller limit value of the of hole dimension pair is equal to the basic size of the assembly. Do not run jar or accelerator in the neutral point zone.
Sep 10, 2014 bottomhole assembly bha design purpose components assemblies. There is no limit on the number of elements that can be placed on a drawing. Companies drill string and bottom hole assembly components. Fabrication and assembly drawing tools the drawing tools include support for adding pcb views to fabrication and assembly drawings. 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. Bha table of contents 10 bottom hole assemblies page 10. 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. An additional 8 bbl of mud were reportedly gained during the time required to run the. With the well flowing, the bottomhole assembly consisting of the overshot, seven 4 3 4 in. 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. Pdf dynamics of the bottom hole assembly during drilling. In order to make a usable hole in the earth, there has to be a connection from the rig to the ground and a way to remove the earth as you drill. 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 and the stabilizer.
There are a few limitations of which you need to be aware when it comes to working with pdfs. The second region is located along at least the working surface of the diamond body. Assembly language is almost certainly the most difficult kind of computer programming, but keep in mind that were speaking in relative terms here. 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. When you click on a pdf from a dropdown list, you will be presented the option of inserting a link to the file or the actual file. The art of assembly language page i the art of assembly language brief contents forward why would anyone learn this stuff. Minimizing trips for bha changes is the objective of every client. 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.
When the bottomhole assembly reaches the surface, the rcd packer must be removed or the annular preventer opened. Bottomhole assembly bha components trican well service. Plates are constrained and i want to make holes through 3 plates. May 01, 2017 starting at the bottom, obviously, the bit is the first and most important part of the bottom hole assembly bha. It is primary made up of drill collars, stabilizers and the bit. How to match drill components in an assembly so that the holes reflects on individual components in ug nx. 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.
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. The hole series is an assembly feature which creates hole features in the components of the assembly. View notes bha from oil and ga 11 at proklamasi 45 university. Five pushups are harder to do than five jumping jacksbut compared to running the marathon, both amount to almost nothing. 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.
Basic hole system most common system of computing limit dimensions. 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 bottomhole assembly is the portion of the drilling assembly below the drill pipe. Table of contents 10 bottom hole assemblies page 10. The bottomhole assembly must provide force for the bit to break the rock weight on bit, survive a hostile mechanical environment and. Assembly language is a lowlevel programming language for a computer, or other programmable device specific to a particular computer architecture in contrast to most high level programming languages, which are generally portable across multiple systems. Avoid having large changes in cross sectional area in the lower bha components, as. There is an inherent complication in bottom hole assembly bha tendency modeling, which lies within the isolation of the impact of individual design and environmental factors. Drill pipes the design process shall address the following items. 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. In the air drilling process, the prebent pendulum bottom hole assembly pbpbha has excellent. Oftentimes the assembly includes a mud motor, directional drilling and measuring equipment, measurementswhiledrilling tools, logging whiledrilling.
The art of assembly language page iii the art of assembly language full contents forward why would anyone learn this stuff. 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 oem bottom hole assembly bha kit has been used since 1980 by both large and small inspection companies for inspection performed on and offshore. You can drag and drop views of the board outline, top bottom side of the pcb, drill. The most common components of the bha are drill collars, stabilizers, shock absorbs, jars, reamers, heavy weight drill pipe and the drilling bit. 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. The bha design objective for directional control is to provide the directional tendency that will match the planned trajectory of the well. How to match drill components in an assembly so that the. Get started right now by watching this free video presentation. Drilling bottomhole assembly dynamics rice university. Pdf a state of the art windows graphical user interface gui program has been developed to predict and design the bottomhole assembly bha. The following discussion presents the detailed structure of each component.
For example, a flex component in the bha, which is a design feature, has a different effect on the bha response within different trajectories e. But when you get near the bottom, many specialized tools are needed to successfully drill. One of the features must be a base or boss, and the other must be a hole or a cut. Downhole drilling assemblies are an expensive part of the drilling equipment. Your contribution will go a long way in helping us. Introduction the drill bit is an important component in the drill string. 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. 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 language is more difficult to learn than pascal, but compared to. It is the lowest part of the drill string, extending from the bit to the drill pipe.
Play with the amount of hwdp between jar and accelerator to achieve this. Hi rsavage, i didnt read all of this post, so please disregard if this isnt helpful, but there is a trick that will allow you to create holes in your part file from the assembly file, by using the bolted connection tool, and simply not selecting any hardware. Join the grabcad community today to gain access and download. Bottomhole assembly an overview sciencedirect topics. Selection of optimum bottom hole assembly configuration. Hi rsavage, i didnt read all of this post, so please disregard if this isnt helpful, but there is a trick that will allow you to create holes in your part file from the assembly file, by using the bolted connection tool. Grace, in blowout and well control handbook second edition, 2017. You could actually create holes for each part in the part design workbench, but the assembly hole command available in assembly design workbench creates holes more rapidly and more productively. The topics in the index will give the page numbers of information relating to specific drilling problems which you might face on the rig floor.
You can add mates automatically between features that have a peginhole relationship. A hole series extends through each unsuppressed component in the assembly that intersects the axis of the hole the components do not have to touch. It can be as simple as bit and drill collars or it can be very complex and made up. The first cutter element also contains a second region comprising interstitial regions that are substantially free of the infiltrant material. The bha is connected to the drilling rig by the drill pipe, an extendable hollow tube which conveys the mechanical and. In parallel, a comprehensive assessment of existing concepts and techniques for addressing drillstring dynamics is undertaken. Us8752656b2 method of designing a bottom hole assembly and. The bottom hole assembly of the present invention includes a drill bit driven by a positive displacement drilling motor, the motor being constructed of tubular housings, one of said housings having a bend so as to cause the bit to drill directionally, another housing containing a rotor and stator to generate power, and a flexible section between the power generation housing and the bend.
The bha design is based upon the requirements of having enough weight transfer to the bit wob to be able to drill and achieve a sufficient rate of. A bottom hole assembly bha is a component of a drilling rig. If a vibration dampening device is used in the packed. Bottomhole assembly bha is a complex combination of several drilling tools including directional drilling assembly. The assembly can consist of drill collars, subs such as stabilizers, reamers, shocks, hole openers, and the bit sub and bit. Starting at the bottom, obviously, the bit is the first and most important part of the bottom hole assembly bha. The assembly can consist of drill collars, subs such as stabilizers, reamers, shocks, holeopeners, and the bit sub and bit. 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. Avoid having large changes in cross sectional area in the lower bha components, as this will scatter and reflect the jar impacts. You can add mates automatically between features that have a pegin hole relationship. It consists of a string below the drill pipe in a drill string. Changing positions of holes in parts according to an assembly. A drill string on a drilling rig is a column, or string, of drill pipe that transmits drilling fluid via the.
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