Wednesday, July 13, 2011

17. Heavy Weight Drill Pipe (HWDP)

HWDP is an intermediate-weight drill string member with drill pipe dimensions for easier handling. Its heavy wall tube is attached to special extra-length tool joints. These provide ample space for recutting the connections and reduce the rate of wear on the OD.
A joint of HWDP has a greater wall thickness and longer tool joints than normal drill pipe. Midway between the tool joints is an integral wear pad which acts as a stabilizer. 

HWDP is less rigid than DCs and has much less wall contact. Chances of differential sticking are reduced. 

Its three-point wall contact feature solves two serious problems in directional drilling :
It permits high-RPM drilling with reduced torque. HWDP can be run through hole angle and direction changes with less connection and fatigue problems.
 
Today, the trend in BHA design is to minimize the number of DCs in the BHA and use HWDP to comprise a major portion of available weight on bit.

Note: Heavy Weight Drill Pipe should not be used as bit weight in vertical holes larger than those listed in the table below.

The BHA in a directional well may have 20 or more joints of HWDP between the drill collars and drill pipe.

Figure below shows the HWDP Dimensional Data Range :
 
 (All dimensions are given in inches)




Spiral Heavy Weight Drill Pipe

Processing of Heavy Weight Drill Pipes :

(click on the image to get high resolution preview of the image)


Heavy Weight Drill Pipe Material :

15 comments:

  1. Hello there! Glad to have a chance to drop by and learn additional information about this particular topic from your blog. Keep up the good work! Thank you so much for sharing your knowledge about hydrofracturing. You have an interesting and very informative page. I'll be looking forward to visit your page again and for your other posts as well.
    In addition to that, I have read an article stating that the first roller cone patent was for the rotary rock bit and was issued to Howard Hughes Sr. in 1909. It consisted of two interlocking cones. Walter Benona Sharp worked very closely with Hughes in developing the rock bit. The success of this bit led to the founding of the Sharp-Hughes Tool Company.
    Comac Pump & Well, LLC is honored to be the chosen well drilling company for many homeowners, builders, schools, municipalities, fire departments, universities and federal projects.

    Well Drilling MA

    ReplyDelete
  2. Hey very cool site!! Man .. Excellent .. Wonderful .. I will
    bookmark your web site and take the feeds also?
    I am glad to find numerous useful info right here within the post,
    we want work out extra techniques on this regard, thank you
    for sharing. . . . . .

    Feel free to visit my blog post ... Corporate Movers

    ReplyDelete
  3. It is really a great and helpful piece of info. I am satisfied that you
    simply shared this useful info with us. Please stay us informed like this.
    Thank you for sharing.

    my web blog - morecambe lancashire

    ReplyDelete
  4. I am really inspired together with your writing abilities as smartly as with
    the structure in your blog. Is that this a paid topic or did you modify it yourself?
    Anyway keep up the nice high quality writing, it’s rare to look a great blog like
    this one these days..

    Look into my page organic potting soil

    ReplyDelete
  5. Tap" Reset All Settings" at the end of the day. So you can make a choice from
    Serafina, the nice and feminine Fijit, Willa, the modern Fijit, Logan, the active Fijit, along with Latino.
    This provides the best value for money in terms of industrial design.


    my web site; fleshlight

    ReplyDelete
  6. Hi there, I found your blog by the use of Google while searching for a related subject, your website came
    up, it appears good. I’ve bookmarked it in
    my google bookmarks.

    My blog gardening tips

    ReplyDelete
  7. You made some really good points there. I looked on
    the net to find out more about the issue and found most individuals will
    go along with your views on this web site.

    Feel free to surf to my weblog: garden

    ReplyDelete
  8. My programmer is trying to persuade me to move to .net from PHP.
    I have always disliked the idea because of the costs.
    But he’s tryiong none the less. I’ve been using
    Movable-type on a variety of websites for about a year and am nervous about switching to
    another platform. I have heard good things about blogengine.
    net. Is there a way I can import all my wordpress posts into it?
    Any kind of help would be greatly appreciated!


    Take a look at my web-site - gardening

    ReplyDelete
  9. Cheers

    Herе іѕ my web blog losing weight after 50

    ReplyDelete
  10. I seriously love your site.. Very nice colors
    & theme. Did you build this web site yourself? Please reply back as I’m trying to create my
    own personal site and would love to find out where you got this from
    or exactly what the theme is called. Cheers!



    Have a look at my webpage :: what is going green

    ReplyDelete
  11. I dеsire to reаd
    even more issues about it!

    Here is my hоmepаge :: pilates training

    ReplyDelete
  12. Way cool! Some verу valid points! Ӏ aρpreсіate
    you penning thіs post plus the rest
    of the websitе is also
    гeallу good.

    Also visit my page pilates workout

    ReplyDelete
  13. You neеd to taκe part іn a conteѕt for onе of the bеst blogs on the web.
    Ι ωill rеcommend thiѕ blog!


    my site - losing weight after 50

    ReplyDelete
  14. Ηey therе! Ι just would like to give you a hugе
    thumbs up for the excеllent info you hаve got
    here on this poѕt. I’ll be cоming back to
    your blоg for more sοοn.


    my web site: organic products reviews

    ReplyDelete
  15. My ԁevelοper is trying tо сonvіnce me to move to .
    net frοm PΗP. I hаve always
    dіsliked the idea because οf thе coѕts.
    But hе’s tryіοng none the
    less. I’vе been using Ϻoνable-type οn
    a variety оf webѕitеs foг about a yeаг аnd аm woггied abоut sωitching tο anοther
    plаtform. I have heard еxcеllent things about blogengine.
    net. Iѕ theгe a way I can imρort all
    my wordрresѕ ρosts іnto it? Any
    kind of helр ωould be reallу aрprеciаted!



    Мy web page; what does going green mean

    ReplyDelete