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What should be the Standard / Benchmark Tripping speeds in Open hole and in Cased Hole, Casing running speeds for 2 million lbs Jack up rig ,
03 July 2017

Dear All,

In the view to plan and establish Time Vs Depth curve, for 2 million lbs. Jack up rigs

for each hole size what should be  

1) The Standard / Benchmark Tripping speeds in Open hole and in Cased Hole?

2) The Casing running speeds in Open hole and in Cased Hole?

The type of wells planned to drilled are exploratory and depth @ 20000ft.

and the casing Sizes are 42"x30"x24"x185/8"x135/8"x103/4"x75/8x5".

appreciate your help

Thanks

Hari.


3 answer(s)
Companyrep
Drilling Specialist/Well Engineer/Training Consultant
Kingdom Drilling
Total Posts: 470
Join Date: 10/01/05
To be the best you have to beat the best? 

Where Pipe handling processes can only be improved in two ways. 
1. Incrementally.
2. Radical change. 

What’s the benchmark. ?

Simply Go in to U TUBE and observe manual rigs tripping 90ft stands,  tripping and connection capabilities today. 

Then review todays failing mechanised systems and see where we are at. 

Modern super single land rigs often best present where current benchmarks are with modern machine people interfaces etc,  eg Three to four people to run the rig drilling systems safe effective, efficiently. 

For bigger Derrick rigs, when revising uninterrupted tripping conditions (where wellbore conditions permit). In 80’d 90’s 50-60stands per hr was consistently safely achieved hr after hr with well trained crews. 4500-5400ft/hr. On basic manual rigs that still exist in many regions.. majority have all ten fingers after years of doing this.  NOTE. Max speed in in fact less than 1mph! 

POH is as stated is generally somewhat less eg 3200-3600ft//hr ( assuming 90ft stands) 0.6mph! 

Tripping pipe at max speed is not exactly fast! 

In today’s mechanised technological world? 

Huisman leads the way with 180ft ( 60m)  stands on current HIT systems sitting on thier dock in Schiedam . Semis are currently being built with the new HIT system. 
So watch out world radical change is coming. 

In their test well they have stated fully automated tripping 
1700m/hr 1700/60 per hr. 

The next metric in conjunction is the time based evidence to prove uninterrupted tripping. Trip after trip. Vs Current manual benchmarks.

Claiming so many stand per hr is one thing proof in the mechanised systems pudding is another.? 

Eg In tender process I would review physical tripping logs to assure contractors words are evidently true. 

Reality, Based on last three wells we have been involved with. Physical parts  people captured logs tripping evidence falls way short of claims. Averaging falls 50% short of benchmarks claims. 

Rest assured this is where we are loosing time and money hand over fist! 

Because There are simply too many (technical  accidental stoppages) where little of which gets reported / investigated ( stop cards going in) about any of  this? To raise the real evident truth and proof of these systems and the general lack of safety awareness of things that fail and stop the drilling process! 

Third associated metric is also rig up rig down times of changing elevators slips bottom hole assemblies etc. Again this is where mechanised systems again fall short? 

Where if rig does not have a bucking machine or offline capability this also needs to be accounted for. In overall benchmark assessment. More time money and process safety hazards risk further arise?  

Attend to all these issues is where greatest drilling process improve savings evidently exists.

Today’s in these areas inefficiencies and ineffectiveness is evidently regressed what competent capable people have achieved in the past. 

Bottom line evident truth and wells proof is that we have fallen way behind historic people process benchmarks and are too often still playing catch up. 

That the evident  ( physical ( parts) people and evident drilling log proof of such matters clearly states? 


snas
Well Engineering Consultant and Instructor
SPREAD Associates
Total Posts: 41
Join Date: 23/03/16
Hari

There are no real benchmarks for tripping as Awais already pointed out it all depends on the hole and mud conditions. 

Big pipe in open hole goes much slower then small tubulars in cased hole

biggest challenge is often the speed of the pipe handling systems not the hoisting capacity of the rig
Awais
Senior Drilling Engineer
ADNOC
Total Posts: 1
Join Date: 14/07/20

The maximum tripping speed depends on swab & surge simulation which depends on hole size, BHA OD and Mud properties. However most of the time Swab & Surge is not a major limiter for higher speed for tripping. Tripping speed also dependent on rig capability, Crew motivation and handling equipment efficiency.

As per our practice, we have set benchmark based on our environment Cased Hole tripping speed 24 Stands/hr and Open Hole Tripping Speed 16 Stands/hr.

Once any benchmark is achieved we reset our KPI with 5% further improvement.

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