Well-drilling Rig Intro

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Revision as of 19:55, 15 May 2011 by Andrew Buck (talk | contribs) (updating the text to discuss new additions to the model)
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Main > Water

Well Drilling Rig - water is crucial. This is a great flex fab enterprise opportunity - based primarily on integration of off-shelf materials.

Resource Map

See videos at www.vimeo.com from EMAS for hand powered low tech water well drilling technologies.

Collaboration

Review of Project Status

Well - Current Work

water swivel


link to some basic ideas about a swivel google doc

[2]


Waterwellswivelmach1.png


pulling unit


idea for a lifetrac enabled pulling apparatus google doc

LifeTracWaterWellPullingUnit.png

square tubing could be reused on other projects after well is complete

could wooden 4x4s work? need extra support beams?

A preliminary design

Well-Drilling Rig.png

Here is a first rendering of the well drilling rig as rendered in BRL-CAD. The hydraulic pump (green) from the MicroTrac is shown mounted with the shaft downwards on the blue sliding frame which moves up and down the side tracks. The mounting of the motor to the green frame will use the same two bolt quick release system employed by the MicroTrac to allow for interoperability and quick changeovers from one device to the other. The rotating shaft from the hydraulic pump is connected to the purple section of drill string piping which stays centered in the swivel tee allowing drilling mud to flow into it and down the drill string (shown in light green). The purple section of piping is held horizontally by the holes in the top and bottom of the frame which are only slightly bigger than the purple pipe. This purple section of piping is supported vertically by the rotating bearing assembly which rides on the top of the sliding frame. If rock is encountered while drilling the small circular plate above the bearing will push the bearing down putting extra weight on the drill string. This allows weights to be hung along the back panel of the frame allowing the amount of downward force on the drill string to be manipulated. In the reverse situation, when tripping the drill string out of the hole, the purple section will pull down on the bearing causing it to move off the circular plate and against the frame below, pushing down on the frame and holding up the drill string as it is withdrawn from the well.

At ground level the the drill string passes through the red drill collar which bolts down to the gray baseplate allowing it to be easily removed or swapped for a smaller diameter collar (the square collar flange plate will be the same for all collars allowing for interchangeability). The machine currently is shown with a 6 inch inside diameter collar allowing a 6 inch well casing ti exactly fit inside it. At the bottom of the drill string a simple gray bit is shown which is just a section of 6" pipe with partially covered end caps connected to the bottom of the lowest section of drill string piping. Since the actual drill string piping is much smaller than 6 inches (probably only 3 or 4 inches at most for a water well drilling rig) the collar can also serve analogous to the function of a rotary table on an oil rig allowing a slip to be used to support the drill string when it is detached from the turning head at the top of the rig.

The vertical side tracks can either be composed of three flat pieces of steel welded along the edges to form a channel or can be made from large (~10 cm or bigger square tubing which has been cut in half lengthwise). If additional ground stability on the baseplate is required, four long steel stakes can be driven through the corners of the baseplate to prevent it from sliding. If these stakes are just simple pieces of re-bar they can even be left in place after the baseplate is removed (when the drilling rig is lifted straight up, or tipped down to one side the baseplate would just lift off the top of the stakes), these could then be cemented into the top pad when the wellhead is capped preventing it from sliding off the top of the well, or they can be removed for re-use as well.

The side tracks bolt to the baseplate and to each other with additional plates on the outside of the tracks a pair of bolts at each end (outer plates not shown). Since the bolt holes on all pieces of this side track material are 10 cm and 20 cm in from the ends of the piece they are interchangeable with or attachable to any other piece no matter whether they bolt to the baseplate, the top crown, or another section. This interchangeability on the side rails means you can build a small test rig with short rails for prototyping and shallow well drilling and then later on you can add additional height to the drill rig by adding on longer tracks letting you run deeper before having to break the drill string to add another section (making digging very deep wells much faster). Disassembling the side tracks would be easy to do (only 4 bolts per section) allowing the tracks to be disassembled for long distance transport and the re-assembled at the well site. In order to make room for the bolt heads on the inside of the tracks, the blue frame has 4 cm by 4 cm channels cut into each side; this lets the bolts securing the side tracks pass by without affecting the guiding done by the outside corners of the frame.

The side tracks can also be a mounting point for a simple hand cranked, direct drive winch; similar to the winches on boat trailers. The winch, shown in brown in the rendering dispenses a cable up over the two pulleys on the top of the crown. The pulley near the centerline of the machine then supports the sliding frame below it allowing it to travel freely up the center of the side channels. Instead of a hand winch and two pulleys as shown a chain hoist could also be used.

Please let me know what you think about the pictured design, once I have added the rest of the drilling equipment and after making any changes suggested here, I will post the .g file so other people can play around with it.

Below is the tree structure of the major components: 

drill_string.c/
	u drill_string.r/R
		u drill_string1.s

bit.c/
	u bit.r/R
		u bit_guide.s
		u bit_plane_upper.s
		u bit_plane_lower.s
	u bit_guide.s
	u bit_plane_lower.s
	u bit_plane_upper.s

swivel.c/
	u swivel_tee.r/R
		u swivel_tee1.s
		u swivel_tee2.s
	u swivel_cap_top.r/R
		u swivel_cap_top.s
	u swivel_cap_bottom.r/R
		u swivel_cap_bottom.s
	u swivel_pipe.r/R
		u swivel_pipe.s
		- swivel_pipe_hole1.s
		- swivel_pipe_hole2.s
	u swivel_lift_pin.r/R
		u swivel_lift_pin.s
	u swivel_lift_bearing1.r/R
		u swivel_lift_bearing1.s
	u swivel_lift_bearing2.r/R
		u swivel_lift_bearing2.s

frame.c/
	u frame.r/R
		u frame_top.s
		- cyl_2.1_cm.s
		- swivel_lift_bearing_track.s
		u frame_bottom.s
		- cyl_2.1_cm.s
		u frame_left.s
		u frame_right.s
		u frame_back.s

tower.c/
	u baseplate.r/R
		u baseplate.s
		- baseplate_cutout.s
	u track_left.r/R
		u track_left1.s
		u track_left2.s
		u track_left3.s
	u track_right.r/R
		u track_right1.s
		u track_right2.s
		u track_right3.s
	u crown.r/R
		u crown.s

motor.c/
	u motor.r/R
		u motor.s
	u motor_shaft.r/R
		u motor_shaft.s

drill_collar.c/
	u drill_collar.r/R
		u drill_collar.s
	u drill_collar_flange.r/R
		u drill_collar_flange.s
		- cyl_6_in_1_cm.s
	u drill_collar_spout.r/R
		u drill_collar_spout.s
		- cyl_6_in.s

open source tricone bit

i think we should start thinking about ways to make tricone bits

Recommend you build "drag" bit, tricone or roller cone bit rely on weight of drill string to break up rock. Most of the designs shown will not have sufficient weight on bit for tricone bit to drill rock.

stack plate steel?

rivet to housing?


welded pipe

want to look into rolling flat plate into tubes and welding seems?


casing


could poly pipe work for well casing?

Yes, PVC pipe is often used to case small water wells, under 8"/200mm diameter borehole.

Polyethylene_from_Ethanol

what size casing is typically used in water well?

You need a minimum of 4"/100mm to allow for installation of cast iron cylinder for India MKII or MKIII by AOV. This will also allow installation of the Afri-Dev type pump.


mud pump

google doc

pump types

what kind of simple designs could be utilized for pumping mud down the drill pipe?

possible plans for reuse of mud pump materials after well is drilled?

does factory farm need this type of pump for other things?

what were some of the pros and cons of the hydraulic pump used on the first drill attempt.

OpenSourceMudPumpIdea screwpump.png

well pump

was the design used on first factory farm well successful? does the design need improvement?

Well - Developments Needed

Well - General

The ability to dig wells allows communities to access underground resources:

-water

-geothermal

Not to mention the power of being able to dig deep holes for support posts or pilings.

Well - Specific

Well - Background Debriefing

Well - Information Work

Well - Hardware Work

Well - Sign-in

Development Work Template

  1. Well - Product Definition
    1. Well - General
    2. Well - General Scope
    3. Well - Product Ecology
      1. Well - Localization
      2. Well - Scaleability
      3. Well - Analysis of Scale
      4. Well - Lifecycle Analysis
    4. Well - Enterprise Options
    5. Well - Development Approach
      1. Well - Timeline
      2. Well - Development Budget
        1. Well - Value Spent
        2. Well - Value available
        3. Well - Value needed
    6. Well - Deliverables and Product Specifications
    7. Well - Industry Standards
    8. Well - Market and Market Segmentation
    9. Well - Salient Features and Keys to Success
  2. Well - Technical Design
    1. Well - Product System Design
      1. Well - Diagrams and Conceptual Drawings
        1. Well - Pattern Language Icons
        2. Well - Structural Diagram
        3. Well - Funcional or Process Diagram
        4. Well - Workflow
      2. Well - Technical Issues
      3. Well - Deployment Strategy
      4. Well - Performance specifications
      5. Well - Calculations
        1. Well - Design Calculations
        2. Well - Yields
        3. Well - Rates
        4. Well - Structural Calculations
        5. Well - Power Requirements
        6. Well - Ergonomics of Production
        7. Well -Time Requirements
        8. Well - Economic Breakeven Analysis
        9. Well - Scaleability Calculations
        10. Well - Growth Calculations
      6. Well - Technical Drawings and CAD
      7. Well - CAM Files
    2. Well - Component Design
      1. Well - Diagrams
      2. Well - Conceptual drawings
      3. Well - Performance specifications
      4. Well - Performance calculations
      5. Well - Technical drawings and CAD
      6. Well - CAM files whenever available
    3. Well - Subcomponents
  3. Well - Deployment and Results
    1. Well - Production steps
    2. Well - Flexible Fabrication or Production
    3. Well - Bill of materials
    4. Well - Pictures and Video
    5. Well - Data
  4. Well - Documentation and Education
    1. Well - Documentation
    2. Well - Enterprise Plans
  5. Well - Resource Development
    1. Well - Identifying Stakeholders
      1. Well - Information Collaboration
        1. Well - Wiki Markup
        2. Well - Addition of Supporting References
        3. Well - Production of diagrams, flowcharts, 3D computer models, and other qualitative information architecture
        4. Well - Technical Calculations, Drawings, CAD, CAM, other
      2. Well - Prototyping
      3. Well - Funding
      4. Well - Preordering working products
      5. Well - Grantwriting
      6. Well - Publicity
      7. Well - User/Fabricator Training and Accreditation
      8. Well - Standards and Certification Developmen
      9. Well - Other
    2. Well - Grantwriting
      1. Well - Volunteer grantwriters
      2. Well - Professional, Outcome-Based Grantwriters
    3. Well - Collaborative Stakeholder Funding
    4. Well - Tool and Material Donations
    5. Well - Charitable Contributions
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