CemCADE* well cementing recommendation for 18 5/8 in Casing at 1260 ft Operator Contract
: KOC : 12050934
Well Field
: SA-573 : Sabriyah
Prepared for Proposal No. Date Prepared
: Drilling & WO Team III : Ver 2 : Feb-2015
Location i-District Business Phone FAX No.
: : : :
Prepared by Phone E-Mail Address Reviewed by Approved by
: : : : :
SP-185 2100134 97206967 23984325
Gustavo Nakagawa 97206967
[email protected] Yusrizal Yusuf Chelsea Ellis
Disclaimer Notice: Schlumberger submits this document with the benefit of its judgment, experience, and good oilfield practices. This information is provided in accordance with generally accepted industry practice, relying on facts or information provided by others, limitations, computer models, measurements, assumptions and inferences that are not infallible. Calculations are estimates based on provided information. All proposals, recommendations, or predictions are opinions only. NO WARRANTY IS GIVEN CONCERNING ACCURACY OR COMPLETENESS OF DATA, INFORMATION PRESENTED, EFFECTIVENESS OF MATERIAL, PRODUCTS OR SUPPLIES, RECOMMENDATIONS MADE, OR RESULTS OF THE SERVICES RENDERED. Freedom from infringement of any intellectual property rights of Schlumberger or others is not to be inferred and no intellectual property rights are granted hereby.
*
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
JOB OBJECTIVE To cement 18 5/8’’ casing to surface using 15.8 ppg Class G cement slurry. JOB PROCEDURE 1. Flush the line with 10 bbl of water and pressure test the line to 2000 psi: 2. Pump 40 bbl of water spacer ahead of cement at 4-5 bpm 3. Mix and Pump 364 bbl of 15.8 ppg Class G (+/- 0.2 ppg) at 5-6 bpm or until get pure cement slurry to surface. 4. Displace with 21.7 bbl of 9.5 ppg WBM (fluid in hole): - 16.7 bbl @ 4-5 bpm - 5.0 bbl @ 1-2 bpm After sting out, it is recommended to flush string with 10 bbl of mud to clear the string The Max dynamic pump pressure is 600 psi assuming no flow restrictions and cement to surface (see the graph of the Pumping Pressure) MAXIMUM STOPPING TIME DURING THE JOB IS 20 MINUTES Plan for a Top Job with 15.8 ppg class G cement + 1% BWOC of S001 if cement not received to surface or cement level drops. Total Cement slurry volume available on location for the main job is 364 bbl. Total cement slurry available for a top job is 100 bbl. Note:
Chain down the casing for min 5 tons to avoid casing pumpout The calculation is based upon: 9.5 ppg mud is placed in the annulus between the Drill pipe and the 18 5/8” casing. The volume is based on the 22” hole plus 100% excess. Mud conditioning is highly recommended prior to the cement job. Mixed fluid and cement samples should to be taken The cement slurry design/Job design is complying with all related technical memos and technical alerts
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
Section 1: well description Configuration Stage Rig Type Total MD BHST Bit Size
: Stab In : Single : Land : 1260.0 ft : 94 degF : 22 in
(x 1000) psi
0
ft
0
OD 30. in @ 73ft
1
2
Frac Pore
500.0
OD 18.6 in @ 560ft
OD 5. in @ 1220ft
Kuwait Sands
1000.0
OD 18.6 in @ 1200ft
Stb C @ 1220ft
1500.0
OD 18.6 in @ 1260ft
Well
Lithology
Formation Press.
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
Previous String MD (ft)
OD (in) 73.0
30
Weight (lb/ft) 309.7
5
Weight (lb/ft) 19.5
ID (in) 29.000
Drill Pipe MD (ft) 1220.0
OD (in)
ID (in)
Grade 4.276
Collapse (psi) 12030
X-95
Burst (psi) 12040
Stab In Collar MD : 1220.0 ft Casing/liner Shoe MD : 1260.0 ft
Casing/Liner MD (ft) 560.0 1200.0 1260.0
OD (in) 18 5/8 18 5/8 18 5/8
Joint (ft) 40.0 40.0 30.0
Weight (lb/ft) 87.5 112.0 112.0
Mean OH Diameter Mean Annular Excess Mean OH Equivalent Diameter Total OH Volume
ID (in) 17.755 17.467 17.467
Grade K-55 K-55 K-55
Collapse (psi) 630 1420 1420
: 22.000 in : 100.0 % : 24.922 in : 716.2 bbl (including excess)
Caliper and Hole Size Data MD (ft)
Caliper (in) 22.000
1260.0
Max. Deviation Angle Max. DLS
Excess (%) 100.0
Equiv. Diam. (in) 24.922
: 1 deg : 0.075 deg/100ft
Directional Survey Data MD (ft)
TVD (ft)
0.0 1260.0
0.0 1259.9
Deviation (deg) 0.0 0.9
Azimuth (deg) 0.0 8.9
Dogleg Sev. (deg/100ft) 0.000 0.075
Formation Data MD (ft) 1230.0 1260.0
Frac. (lb/gal) 17.00 17.00
Pore (lb/gal) 8.33 8.33
Name
Lithology
Kuwait Sands Dammam
Sandstone Dolostone
Geothermal Temperature Profile MD (ft)
TVD (ft) 0.0 1333.0
0.0 1332.9
Temperature (degF)
Gradient (degF/100ft) 80 95
0.0 1.2
Burst (psi) 2250 2990 2990
Thread BTC BTC BTC
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
Section 2: fluid sequence Original fluid Displacement Volume Drill Pipe Volume Total Volume TOC
WBM Pv : 45.000 cP 21.7 bbl 21.7 bbl 425.7 bbl 0.0 ft
9.50 lb/gal Ty : 20.00 lbf/100ft2
Fluid Sequence Name Water Cement Slurry WBM
Volume (bbl) 40.0 364.0 21.7
Ann. Len (ft) 0.0 1260.0
Top (ft)
0.0
Density (lb/gal) 8.34 15.80 9.50
Rheology viscosity:1.000 cP Pv:39.089 cP Pv:45.000 cP
WARNING : CASING PUMP OUT Static Security Checks : Frac Pore Collapse Burst Csg.Pump out Check Valve Diff Press
5 psi 28 psi 434 psi 2250 psi -20.5 lb 399 psi
at 73.0 ft at 73.0 ft at 560.0 ft at 0.0 ft
Ty:30.54 lbf/100ft2 Ty:20.00 lbf/100ft2
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
Section 3: pumping schedule Name Water Cement Slurry WBM WBM
Flow Rate (bbl/min) 5.0 5.5 4.0 3.0
Volume (bbl) 40.0 364.0 16.7 5.0 Total
Pumping Schedule Stage Time (min) 8.0 66.2 4.2 1.7 01:20 hr:mn
Cum.Vol (bbl). 40.0 364.0 16.7 21.7
Inj. Temp. (degF) 80 80 80 80
Comments Pump water as a spacer Mix and pump cement slurry Displace with WBM Displace with WBM
425.7 bbl
Dynamic Security Checks : Frac Pore Collapse Burst
4 psi 0 psi 424 psi 2241 psi
at 73.0 ft at 73.0 ft at 560.0 ft at 235.4 ft
Temperature Results BHCT Simulated BHCT CT at TOC
Static temperatures : At Time Top of Cement Bottom Hole
82 degF 80 degF 81 degF
Simulated Max HCT Max HCT Depth Max HCT Time
81 degF 180.0 ft 01:20:00 hr:mn:sc
(hr:mn) (degF) (degF)
(hr:mn) (degF) (degF)
Geo. Temp. 80 degF 94 degF
Name Water Cement Slurry WBM WBM Safety Margin Minimum TT Requirement
Minimum TT Requirement Flow Rate Volume (bbl/min) (bbl) 5 40 5.5 364 5 16.7 2 5
Cement Slurry (min) 12 66.2 3.3 2.5 120 204.0 3:24 hr:mn
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
600
Surface Pressure
0
100
Surf. Press. (psi) 200 300 400
500
Acquired Pressure Calc. Pump Press. Calc. CemHP
0
40
80
120
160 200 240 280 Pumped Volume (bbl)
320
360
400
440
Estimated ECD 18
Depth = 1260 ft
9
Ann. Pressure (lb/gal) 12 15
Hydrostatic Dynamic
0
40
80
120
160 200 240 280 Pumped Volume (bbl)
320
360
400
440
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
Section 4: centralizer placement Top of centralization Bottom Cent. MD Casing Shoe NB of Cent. Used
:0.0 ft :1245.0 ft :1260.0 ft :12
Bottom MD (ft) 1200.0 1260.0
Cent. / Joint 1/3 1/1
Centralizer Placement Nbr. 10 2
Cent. Name
Code
NW-ST-18 5/8-12-ST A4 NW-ST-18 5/8-12-ST A4
W18E W18E
Centralizer Description Cent. Name
Code
NW-ST-18 5/8-12-ST A4
W18E
Casing OD (in) 18 5/8
Min. STO (%) 97.2 99.0
@ Depth (ft) 160.0 1260.0
Centralizer Tests
Max. OD (in)
Min. OD (in)
Rigid
Origin
Hole Size (in)
25.197
20.000
No
Hannover
24.000
Running Force (lbf) 357.45
Restoring Force (lbf) 2812.36
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
Laboratory Cement Test Report 15.8 ppg 18 5-8 in Csg Confirmation Test Signatures
Fluid No Date
: AKC 17583001 : Feb-12-2015
Job Type BHST Starting Temp. Starting Pressure
Client Well Name
18 5-8 in Csg 95 degF 80 degF 263 psi
:KOC : SA-573
Location / Rig Field
Depth BHCT Time to Temp. Time to Pressure
: SP-185 : Sabriyah
1260.0 ft 85 degF 00:14 hr:mn 00:14 hr:mn
Gio-AEC
TVD BHP Heating Rate Schedule
1260.0 ft 1060 psi 0.36 degF/min 9.2-3
Composition Slurry Density Solid Vol. Fraction Code
15.80 lb/gal 40.60 %
Yield Porosity
Concentration
Sack Reference
Component
94 lb of CEMENT
Blend Base Fluid
UCN G Loc Water
5.136 gal/sk
D047
0.010 gal/sk
1.16 ft3/sk 59.4 %
Mix Fluid Slurry type
5.146 gal/sk Conventional
Blend Density
Lot Number
3.200 SG
Silo # 9
Antifoam
07052013-2
Rheology Temperature (rpm) 300 200 100 60 30 6 3 10 sec Gel 10 min Gel 1 min Stirring Rheo. computed
80 degF Down (deg) 57.0 48.0 36.0 30.0 25.0 17.0 15.0
Up (deg) 57.0 46.0 35.0 28.0 23.0 16.0 14.0
17 deg - 18.14 lbf/100ft2 29 deg - 30.95 lbf/100ft2 25 deg - 26.68 lbf/100ft2 Viscosity : 36.708 cP Yield Point : 21.81 lbf/100ft2
Thickening Time Consistency Remark : FLY MIX 40 Bc 70 Bc
Time 03:55 hr:mn 04:32 hr:mn
Water Analysis Chloride 3936.00 mg/l
Calcium (lb/bbl)
Comments General Comment : Confirmation Test
Magnesium (lb/bbl)
Average (deg) 57.0 47.0 35.5 29.0 24.0 16.5 14.5
Up (deg) 68.0 56.0 46.0 37.0 32.0 20.0 17.0
85 degF Down (deg) 68.0 58.0 48.0 39.0 34.0 22.0 18.0 18 deg - 19.21 lbf/100ft2 30 deg - 32.02 lbf/100ft2 25 deg - 26.68 lbf/100ft2
Viscosity : 39.089 cP Yield Point : 30.54 lbf/100ft2
Average (deg) 68.0 57.0 47.0 38.0 33.0 21.0 17.5
KOC 18 5/8 in Casing at 1260 ft 12050934
SA-573 2100134 01 - 18 58 in
Laboratory Cement Test Report 18 5-8 in Top Job Pilot Test Signatures
Fluid No Date
: AKC 17301001 : Oct-02-2014
Job Type BHST Starting Temp. Starting Pressure
Client Well Name
18 5-8 in Csg 95 degF 90 degF 263 psi
:KOC : SA-573
Location / Rig Field
Depth BHCT Time to Temp. Time to Pressure
: SP-185 : Sabriyah
1260.0 ft 85 degF 00:14 hr:mn 00:14 hr:mn
Gio-AO-AEC
TVD BHP Heating Rate Schedule
1260.0 ft 1060 psi 0.00 degF/min 9.2-3
Composition Slurry Density Solid Vol. Fraction Code
15.80 lb/gal 41.00 %
Yield Porosity
Concentration
Sack Reference
Component
94 lb of CEMENT
Blend Base Fluid
UCN G loc water
5.133 gal/sk
D047 S001
0.010 gal/sk 1.000 %BWOC
1.17 ft3/sk 59.0 %
Mix Fluid Slurry type
5.204 gal/sk Conventional
Blend Density
Lot Number
3.200 SG
Silo # 3
Antifoam Accelerator
07052013-2 Oc 2014
Rheology Temperature (rpm) 300 200 100 60 30 6 3 10 sec Gel 10 min Gel 1 min Stirring Rheo. computed
90 degF Down (deg) 58.0 49.0 38.0 33.0 27.0 19.0 17.0
Up (deg) 58.0 49.0 38.0 31.0 25.0 17.0 15.0
16 deg - 17.08 lbf/100ft2 26 deg - 27.75 lbf/100ft2 24 deg - 25.62 lbf/100ft2 Viscosity : 35.427 cP Yield Point : 24.38 lbf/100ft2
Thickening Time Consistency Remark : FLY MIX 40 Bc 70 Bc
Time 02:16 hr:mn 02:56 hr:mn
Water Analysis Chloride 3936.00 mg/l
Calcium (lb/bbl)
Magnesium (lb/bbl)
Comments General Comment : Pilot Test Addition of Additives. D047 + S001 then UCN G Cement
Average (deg) 58.0 49.0 38.0 32.0 26.0 18.0 16.0
Up (deg) 74.0 64.0 51.0 44.0 36.0 20.0 15.0
90 degF Down (deg) 74.0 64.0 51.0 44.0 38.0 22.0 17.0 17 deg - 18.14 lbf/100ft2 24 deg - 25.62 lbf/100ft2 15 deg - 16.01 lbf/100ft2
Viscosity : 40.262 cP Yield Point : 35.57 lbf/100ft2
Average (deg) 74.0 64.0 51.0 44.0 37.0 21.0 16.0
CEMENTING CONTINGENCYSA-573 PLAN CHECKLIST
Client Well Name:
KOC 18 5/8 in Casing at 1260 ft JOC 12050934
Possible HSE Situations Injury Emergency Environmental Spill
S-788
2100134 01 - 18 58 in
Contingency Plan Burm off affected area, keep people away, put absorbing material on spill, Inform DS and Schlumberger Personnel who is taking calls, clean up and dispose of spill properly if safe to do so
Possible SQ Execution Situations Contingency Plan Loss of Pump Evaluate the situation, if you can by-pass pump, without jeopardizing job quality, continue pumping, if job quality will be effected inform Company Man of situation, and continue with job if he is satisfied with new job parameters Cement Head Problems
Evaluate the situation. Leak - tighten or replace affected part, if less then 15 minutes down time. Valve or pin not working remove head, and install swedge if hydrostatics allow, otherwise continue at reduce rate
"Down" time limit before circulating
If cement thickening time allows it. And Company Man agrees shut down for max 30 minutes. If slurry mixed is equal to
cement out
well requirements plus 10% and Company Man agrees start to displace if problem cannot be fixed in 30 minutes
Bulk Delivery Problems
Evaluate the situation, Slow down mixing as much as possible, fix the problem, and if delivery can keep up to
Density/Rate variation limits (time, density points,rate) before shutting down to regroup or fix) Maximum allowable pumping pressure in order to avoid burst, collapse press. Or pumping out casing Loss of triplex pump Burst 4" Suction & Discharge hoses Excessive engine overheating Excessive foam generation Mixing water delivery problem Batch mixer tank problems (Agitating, C-Pump failure, Butterfly valve efficiency,…. Etc.) High viscous slurry encountered
reduce rate, and the cement thickening time will allow you to place the slurry, then continue Evaluate the situation, If density is more then 2% different from planned then repair problem, This may mean you have to slow down for awhile for the system to smooth out, then when situation is under control continue mixing You may have to shut down and clean jetting bowl, cement delivery, water delivery ?
Never exceed 75% of your collapse pressure of the weakest tubular you are pumping through and calculate lift press. Continue with other pump as long as you can place slurry 30 minutes before its thickening time, Inform Company Man Have at least 2 hoses of longer length then any of the hoses you are using always available and ready to install Evaluate the situation, If less the 220 spray small water continuously onto radiator, more then 220 shut it down Add more defoamer, Check that all oilers Are topped up, check slurry density with mud balance, it might be light Evaluate situation, slow delivery rate, check inline screens for being plugged, shut down no more then 30 minutes
Decision Points on dropping plug vs circulating cement out Standby Equipment
Evaluate situation, by-pass problem if possible, slow down and fix problem, if it can be done in less then 30 min. Temporally add more mix fluid, check with mud balance, make sure you are using proper mix fluid, and cement Evaluate situation, If cement thickening time allows it. And Company Man agrees shut down for max 30 minutes. If slurry mixed is equal to well requirements plus 10% and Company Man agrees start to displace if problem can ot be fixed in 30 minutes Have all standby equipment check out, and rigged up, ready and running to take over if need be
Leaks
Evaluate situation, but generally shut down close in well, bleed off , and check union seal and tighten and continue
Other Possible Situations How much to "over displace" if top plug does not "bump" on time What to do if pressure limit reached
Contingency Plan No more then 1/2 your shoe track. Perform mud density check using press mud balance to check mud aeration mud check = fill mud balance take weight, then pressurize balance, take weight then divide = airation possible 2% Slow down pump rate, if possible work casing, bleed off slowly, record fluid, start pumping again never exceed your pressure limit, unless Company Man, and Manager talk about it and Company Man signs release form Evaluate situation, and response accordingly, but generally activate emergency shut down devices, and move away from well going against the wind, and meet at muster point (Continue pumping if you are killing well) Slow down pump rate, Hesitate Pumping, if possible work casing, to see if you can break bridging problem in well,
Blowout
Loss of Returns
