The FREE global community of drilling, completion & subsea professionals - Gives you access to a wealth of knowledge that you may not otherwise have had http://myspread.co.uk/ en Sat, 19 May 2012 19:39:15 +0530 SPREAD http://myspread.co.uk/images/icons/feed-icon.png http://myspread.co.uk/ http://myspread.co.uk/discussion/2344_Drill-13-3-8-shoetrack-with-8-1-2-drilling-BHA/ http://myspread.co.uk/discussion/2344_Drill-13-3-8-shoetrack-with-8-1-2-drilling-BHA/ Sun, 13 May 2012 07:26:18 GMT Number of responses : 10
Last reply received on 19-May-2012 at 12:19 AM]]> Hello drillers,

Anybody has experiences to drill 13 3/8" shoetrack (28 m) with 8 1/2" drilling BHA?
Planned inclination at 13 3/8" csg shoe is 15 deg.
Should we go with 12 1/4" clean-out run?
I am thinking to use the 8 1/2" BHA to drill the shoetrack since we will have a low incl. which might have less risk of pack off or stuck due to drilled shoetrack.

Advice please & thanks
Regards,
Ronny ]]> http://myspread.co.uk/discussion/1848_Use-of-drilling-stand/ http://myspread.co.uk/discussion/1848_Use-of-drilling-stand/ Wed, 22 Jun 2011 16:26:50 GMT Number of responses : 5
Last reply received on 18-May-2012 at 11:41 PM]]> Hi folks

We are having a heated debate at our Workshop about whether or not we should use a drilling stand (c/w 15k FOSV) for our HPHT well.

The discussion hinges around the potential need to use a kill/kick assy, which will need to be M/U to the drillstring.

In the event of needing to use the kill/kick assy, it's essential that there are suitable barriers on the inside of the drillstring prior to breaking off the top-drive. We discussed the (relatively) common practice of using non-ported double floats in the drillstring .. but these are generally untested and so do not constitute a barrier.

So, the question is :
1. What does your company do and why ?
2. Is there a way to test the floats such that they can be considered a barrier ? (one idea that springs to mind is a test against pipe rams and the casing before drilling out the shoe, but this cannot be done for subsequent assemblies).
3. What about coring assemblies ?

Right, over to you all.

Kind regards

Dave ]]> http://myspread.co.uk/discussion/2365_Swell-packer-placment/ http://myspread.co.uk/discussion/2365_Swell-packer-placment/ Wed, 16 May 2012 08:53:23 GMT Number of responses : 4
Last reply received on 16-May-2012 at 04:43 PM]]> Folks
On one of our sub sea completions we require stand alone screens with isolation from the reservoirs above and below.
The correct placement of the swell packers is crucial. What are the best practices to correlate the packers on depth?
Thanks ]]> http://myspread.co.uk/discussion/2362_Hercules-Deadline-Anchor/ http://myspread.co.uk/discussion/2362_Hercules-Deadline-Anchor/ Tue, 15 May 2012 18:51:22 GMT Number of responses : 3
Last reply received on 16-May-2012 at 04:04 PM]]> Hi,
We are currently doing a 5 year inspection and need to MPI the hold down bolts for the deadman and also pull the bearing but don't have a maintenance manual for our deadman, does anyone have a manual for a Hercules Deadline Anchor 130-T-SG that shows torque for tie down bolts and removal procedure for bearing???
Regards
Sean Harris ]]> http://myspread.co.uk/discussion/2347_Replace-the-conductor/ http://myspread.co.uk/discussion/2347_Replace-the-conductor/ Mon, 14 May 2012 09:28:51 GMT Number of responses : 4
Last reply received on 16-May-2012 at 12:32 PM]]> What could replace the conductor allowing us to set this on the seabed offline e.g. and perhaps drill and set the surface casing(s) as well with a smaller vessel and half the cost?

Regards,

Peter. ]]> http://myspread.co.uk/discussion/2361_Downhole-Filter-screens/ http://myspread.co.uk/discussion/2361_Downhole-Filter-screens/ Tue, 15 May 2012 13:29:47 GMT Number of responses : 0]]> We have used numereous designs of downhole filter screens but always experience erosion & washing of the screens or the sub they are carried in.
The mud systems are not the cleanest with limited solids control equipment available, and we are looking for a solution to screen debris from downhole tools
Has anyone got any experience running Mashburn downhole filter screens? ]]> http://myspread.co.uk/discussion/2354_Coring-in-carbonate-losses-zone/ http://myspread.co.uk/discussion/2354_Coring-in-carbonate-losses-zone/ Tue, 15 May 2012 03:59:09 GMT Number of responses : 1
Last reply received on 15-May-2012 at 01:08 PM]]> Anybody has experience to take core in the loss circulation zone (carbonate formation) in 8-1/2" hole, vertical well?
Thank you ]]> http://myspread.co.uk/discussion/2348_Mud-gelation-and-inertia-needed/ http://myspread.co.uk/discussion/2348_Mud-gelation-and-inertia-needed/ Mon, 14 May 2012 09:32:17 GMT Number of responses : 0]]> In synthetic muds.
What will change 'rheologicaly' over a long static time period?
particularly in the marine riser where the largest volumes exists when in Ultra deep depths?
What can be done, or is consdered best practise?
All comments appreciated.

Peter. ]]> http://myspread.co.uk/discussion/2340_Basics-of-Slot-Recovery/ http://myspread.co.uk/discussion/2340_Basics-of-Slot-Recovery/ Wed, 9 May 2012 06:33:53 GMT Number of responses : 3
Last reply received on 11-May-2012 at 06:30 PM]]> Hello everyone,

I want to understand more about "slot recovery"?

How it is done and what challenges will we face when we are doing it..

Please suggest some relevant literature and/or contribute your experience.

Thanks & Regards,
Kshitij K
JEPL ]]> http://myspread.co.uk/discussion/2325_Calcium-Carbonate/ http://myspread.co.uk/discussion/2325_Calcium-Carbonate/ Sun, 29 Apr 2012 14:44:22 GMT Number of responses : 12
Last reply received on 03-May-2012 at 04:34 PM]]> Ladies and Gentlemen,
I took a sample of LCM (Calcium Carbonate) today from a plugged drilling motor in the work-shop. The samples evident in the motor were very granular and not what I expected.
I dried a sample and added Hydrochloric Acid -It fizzled like a Seltzer and when the solution cleared there were some granular particles in the bottom of the glass.
My questions are;
Should Calcium Carbonate be hard and granular?
What changes can occur to it downhole?
Is Calcium Carbonate - Calcium Carbonate; that is to say is anything else chemically added to the material for oilfield use.

Sorry to be a 5th grader on this but Chemistry was never my strong point. ]]> http://myspread.co.uk/discussion/1429_Drilling-Simulation-and-Optimization-Softwares/ http://myspread.co.uk/discussion/1429_Drilling-Simulation-and-Optimization-Softwares/ Sat, 23 Oct 2010 13:36:20 GMT Number of responses : 4
Last reply received on 01-May-2012 at 05:12 PM]]> I need softwares for drilling simulation and optimization analyses. I will appreciate suggestions, especially based on direct experience of using such softwares. Independent softwares are prefered, as I know of the available softwares from the top services companies.

Sadiq
Eclipse Energy Services Technology ]]> http://myspread.co.uk/discussion/2321_Pipe-dope-dissolvers/ http://myspread.co.uk/discussion/2321_Pipe-dope-dissolvers/ Tue, 17 Apr 2012 06:48:17 GMT Number of responses : 2
Last reply received on 17-Apr-2012 at 03:22 PM]]> Folks
What is the favoured practice for cleaning pipe dope from drill pipe while running stand alone screens, especially with short sections of screens? Is dissolver regularly used or is the best practice to limit the amount of pipe dope applied to the drill pipe?
Thanks Mike ]]> http://myspread.co.uk/discussion/2312_Hole-opening-pilot-holes-Hole-opener-vs-bit/ http://myspread.co.uk/discussion/2312_Hole-opening-pilot-holes-Hole-opener-vs-bit/ Sun, 15 Apr 2012 12:14:26 GMT Number of responses : 8
Last reply received on 17-Apr-2012 at 02:44 PM]]> Hi folks,

At a recent DWOP, we were discussing how best to hole-open (to 26") a 12-1/4" surface pilot hole, drilled largely through volcanics. Hole is vertical.

The current plan is to use a 26" bit with no MWD capability. However, there was concern about whether or not the 26" bit/assy could be relied upon to follow the pilot-hole. The topic turned to using a hole opener assy instead.

I'd be interested in members' experience of opening a pilot-hole using a bit only. In our case it's relatively soft formations, but it would be good to expand the discussion to include harder formations as well.

Many thanks

Dave Taylor ]]> http://myspread.co.uk/discussion/2306_Subsea-BOP-arrangement/ http://myspread.co.uk/discussion/2306_Subsea-BOP-arrangement/ Fri, 6 Apr 2012 12:01:15 GMT Number of responses : 3
Last reply received on 08-Apr-2012 at 08:59 PM]]> Hello,
Presently working on a moored rig, the BOP stack is a conventional Hydril 18 ¾” 15M. It’s arrangement is:
1/ As per API: CwRdRdA*Cr
2/ Or from Bottom to top: Vetco 16 ¾” H4 DxE 10M, One Double dressed with 5” pipe ram and another 5” pipe ram, One extended double with 4 ½” – 7” variable ram, and one blind shear ram, One GX 18 ¾” 10M annular.
The LMRP is fitted with 18 ¾” H4 ExF 10M, One GX 18 ¾” 10M annular.
(See attached schematic for better understanding).
Question is what is the logic of this configuration, why we would have the lower annular on the lower stack, the choke and kill manifold has been configured by operator, but what is the logic there. Basically what would be the advantages of having this BOP arrangement rather than another.
I looked into IADC manual as well as in API RP 53 where it says you can have several kind of BOP arrangement, but does’nt really explain the advantages of such or such configuration.
Thanks for your help, best regards,
Pierre ]]> http://myspread.co.uk/discussion/2299_Pyrophoric-Shale-on-Tubulars/ http://myspread.co.uk/discussion/2299_Pyrophoric-Shale-on-Tubulars/ Wed, 4 Apr 2012 03:28:09 GMT Number of responses : 5
Last reply received on 08-Apr-2012 at 02:26 PM]]> Hello all,

Has anyone had experience of pyrophoric shale found on/in recovered tubulars? Has this situated ever occurred in the North Sea? If not, then has it occurred anywhere else in the world?

How is it detected? And if you can't detect it, how do you know you have it?

Finally, what is the best way to tackle it and return the tubulars to shore?

Any advice would be greatly appreciated. Thank you all. ]]>