RODHY, DANISWARA AL GHANIY (2023) HIDROLIKA LUMPUR PADA TRAYEK 12 ¼” SUMUR “DS-01” LAPANGAN “R” MENGGUNAKAN MODEL HERSCHEL BULKLEY DAN SOFTWARE WELLPLAN. Other thesis, UNSPECIFIED.
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Abstract
vi
RINGKASAN
HIDROLIKA LUMPUR PADA TRAYEK 12 ¼” SUMUR “DS-
01” LAPANGAN “R” MENGGUNAKAN MODEL HERSCHEL
BULKLEY DAN SOFTWARE WELLPLAN
Oleh
Daniswara Al Ghaniy Rodhy
NIM: 113190106
(Program Studi Sarjana Teknik Perminyakan)
Sumur DS-01 yang berada di lapangan “R” cekungan sumatera selatan adalah
sumur dengan jenis pemboran berarah tipe J dengan inklinasi 12,85° akan di bor
hingga kedalaman akhir 2423 mMD. Trayek 12 ¼” akan di bor dari kedalaman 650
mMD hingga 1496 mMD. Ditemukan masalah pipa terjepit pada saat cabut dan
turun rangkaian hingga dilakukan over pull dan back reaming. Perlu dilakukan
analisa perhitungan hidrolika untuk mengetahui apakah proses pembersihan cutting
pada section 12-1/4” kedalaman 1496 mMD sudah optimal. Agar tidak terjadi hole
problem di pemboran selanjutnya.
Dalam skripsi ini akan dilakukan optimasi cutting transport pada trayek 12 ¼”
dengan cara mengoptimalkan laju alir dengan model herschel bulkley lalu akan
divalidasi oleh software wellplan. Hal yang pertama perlu dianalisa ialah Ft nilai
optimalnya ialah diatas 90% (wastu et al, 2019), kemudian menghitung nilai Ca
dimana nilai optimumnya Ca<4% (baroid drilling fluids, 2019), dan nilai CCI
dimana nilai optimum CCI optimumnya CCI diatas 1(wastu et al, 2019).
Pada trayek 12 ¼” digunakan laju alir sebesar 742 gpm dan didapatkan pada section
casing-DP nilai Ft hanya sebesar 89% selanjutnya dilakukan validasi perhitungan
manual dengan software wellplan didapatkan bahwa model herschel bulkley
merupakan model yang mendekati kondisi aktual lumpur KCL Polymer 7% pada
trayek 12 ¼” dan didapatkan eror perhitungan manual sebesar 2,08%. Lalu
dilakukan pengoptimalan dengan meningkatkan laju alir hingga 840 gpm dan
didapatkan Ft meningkat menjadi 90,1% selanjutnya digunakan metode graphic
untuk melihat kemampuan pompa dengan laju alir 840 gpm didapatkan pump
pressure sebesar 2432 psi dimana pompa masih dibawah maksimum tekanan
pompa yaitu 2580 psi. Setelah itu didapatkan pada hidrolika bit dengan TFA yang
tetap HSI meningkat yang sebelumnya 1,6 hp/in2 menjadi 2,1 hp/in2
Kata kunci: Pemboran, Lumpur Pemboran, Pipa Terjepit. Hidrolika Lumpur,
Cutting Transport
vii
ABSTRACT
MUD HYDRAULICS ON 12 ¼” HOLE “DS-01” WELL “R”
FIELD USING HERSCHEL BULKLEY MODEL AND
WELLPLAN SOFTWARE
By
Daniswara Al Ghaniy Rodhy
NIM: 113190106
(Petroleum Engineering Undergraduated Program)
The DS-01 well located in the "R" field of the South Sumatra Basin is a J-type
directional drilling well with an inclination of 12.85° to be drilled to a final depth
of 2423 mMD. The 12 ¼” hole will be drilled from 650 mMD to 1496 mMD depth.
It was found that there was a problem with the pipe getting stuck when unplugging
and going down the circuit until over pull and back reaming were done. It is
necessary to analyze hydraulics calculations to find out whether the cutting
cleaning process in section 12-1/4” with a depth of 1496 mMD is optimal. So that
there are no hole problems in the next drilling.
In this thesis, cutting transport optimization will be carried out on a 12 ¼” hole by
optimizing the flow rate with the Herschel Bulkley model and then will be validated
by wellplan software. The first thing that needs to be analyzed is that the optimal
Ft value is above 90% (wastu et al, 2019), and then calculates the Ca value where
the optimum value is Ca <4% (baroid drilling fluids, 1988), and the CCI value
where the optimum CCI value is CCI above 1 (wastu et al, 2019).
On the 12 ¼” hole, a flow rate of 742 gpm was used and it was found that in the
casing-DP section the Ft value was only 89%, then manual calculation validation
was carried out with wellplan software, it was found that the Herschel bulkley
model was a model that approached the actual condition of 7% KCL Polymer mud
on 12 ¼” hole and obtained a manual calculation error of 2.08%. Then
optimization was carried out by increasing the flow rate to 840 gpm and obtaining
Ft increased to 90.1% then using the graphic method to see the ability of the pump
with a flow rate of 840 gpm obtained a pump pressure of 2432 psi where the pump
is still below the maximum pump pressure of 2580 psi. After that, it was found that
in bit hydraulics with a fixed TFA, the HSI increased from 1.6 hp/in2 to 2.1 hp/in2.
Keywords: Drilling , Drilling Fluids, Pipe Stuck Drilling Mud Hydraulic , Cutting
Transport
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Drilling , Drilling Fluids, Pipe Stuck Drilling Mud Hydraulic , Cutting Transport |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 12 May 2023 02:15 |
| Last Modified: | 17 May 2023 08:29 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/35209 |
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