scholarly journals K2 SHAFT WATER RING INSTALLATION AT KENCANA UNDERGROUND PT NUSA HALMAHERA MINERAL

2020 ◽  
Vol 1 (1) ◽  
pp. 21-32
Author(s):  
Abdi Wahyudi Samad
Keyword(s):  
Steel Pipe ◽  
Production Loss ◽  
Concrete Wall ◽  
Escape Route ◽  
Pump Station ◽  
Key Word ◽  
Open Hole ◽  
Pipe Line ◽  
Water Ring ◽  
Shaft Wall

ABSTRAK Kencana 2 (K2) Shaft sebagai salah satu jalur lubang terbuka vertikal pada fasilitas Kencana UG PTNHM terdapat rembesan air 8 l/s melalui kontak sambungan (cold joint) antara dinding concrete shaft pada beberapa level. Air tersebut membasahi jalur winder cage dan tali pengaman dari winder shaft dan berakibat masalah korosif menyebabkan terganggu jalur evakuasi yang berpotensi terjadi gangguan produksi jika tidak di atasi. Pengusulan pemasangan talang air khusus pada dinding shaft terhubung langsung pada pipa services DN150 yang terpasang sepanjang 284m menuruni dinding shaft. Talang air khusus ini terbuat dari material galvanis yang kuat dan tahan lama. Pipa services DN150 terhubung langsung menuju stasiun #3 pompa KL. Dari hasil pengamatan setelah terpasang talang air khusus ini, tidak terjadi lagi rembesan air yang masuk kedalam ruangan winder cage dan tali winder, serta kondisi rembesan air pada dinding shaft telah dialirkan menuju stasiun pompa KL sehingga area K2 shaft menjadi kering Kata Kunci: Modifikasi Shaft Winder Platform, Pemasangan Talang Air Khusus.  ABSTRACT The Kencana 2 (K2) Shaft as a vertical open hole UG facility at Kencana UG PTNHM has approximately 8 l/s inflow of water leaking through the cold joints in the concrete liner at various locations. This water saturates the winder cage room and the guide ropes in the winder of shaft and has caused corrosion issues causing the escape route to be compromised leading to a production loss if not take prevention action. It was proposed to install a prefabricated moulded water ring on the wall of the shaft to direct water to a DN150 services steel pipe line that runs down to a 284m depth down of the shaft wall. This water ring using galvanised material and it is tough and durable. The services pipe DN150 would then be piped away from bottom of the K2 shaft to a nearby KL pump station #3. From observation result after water ring installed that there was no water rain into winder cage and rope, and it also the dripping down of the water along the shaft concrete wall was divert throught to the KL pump station so that the K2 shaft area was getting dry.  Key Word: Modification Shaft Winder Platform, Water Ring Installation.

scholarly journals Building a 5000hp, VFD Controlled, Pump Station in 105 Days: “Fact or Fantasy”

1998 ◽  
Author(s):  
Roy C. Spencer ◽  
Lance G. Grainger ◽  
Vince G. Peacock ◽  
Jon Blois
Keyword(s):  
Crude Oil ◽  
Customer Demand ◽  
Line System ◽  
Capacity Increase ◽  
Oil Pump ◽  
Pump Station ◽  
North Eastern ◽  
Pipe Line ◽  
Oil Company

On March 17, 1997 Robicon Corporation was requested, by a large Alberta based oil company, to provide a proposal to manage a turn-key, crude oil, pump station project. The oil company had identified an immediate need to expand their North Eastern Alberta Pipe Line system to allow a higher thru-put into the Hardisty, Alberta area: • the pipe line was capacity restricted and customer demand indicated an immediate requirement to increase pipe line thru-put by 70%; • the capacity increase was required by June 30th or earlier.

Influence of a pipe tool on borehole modes

Geophysics ◽  
2009 ◽  
Vol 74 (3) ◽  
pp. E111-E123 ◽  
Author(s):  
Bikash K. Sinha ◽  
Ergün Şimşek ◽  
Sergey Asvadurov
Keyword(s):  
Steel Pipe ◽  
Stoneley Wave ◽  
Drilling Tool ◽  
Low Frequencies ◽  
Horizontal Drilling ◽  
High Frequencies ◽  
Basic Physics ◽  
Open Hole ◽  
Thick Steel ◽  
Drill Collar

A sonic measurements-while-drilling tool consists of acoustic transmitters and receivers mounted on a drill collar that has the form of a thick steel pipe. This mandrel is designed to meet the strength requirements of tough logging conditions encountered in deviated and horizontal drilling. A primary goal of sonic measurement is to estimate formation compressional and shear slownesses that are not affected by the presence of a drill collar. Understanding the basic physics of monopole, flexural, and quadrupole modes in a cylindrically layered structure consisting of a concentric steel pipe in a water-filled borehole can help in estimating formation compressional and shear slownesses from at least one branch, either of the monopole, dipole, or quadrupole family of modes. Results show that coupling between the pipe and formation modes is strongly dependent on formation properties relative to the borehole-fluid compressional slowness. Thepresence of a steel pipe tool in a borehole causes a significant increase in the Stoneley dispersion at low frequencies. However, the Stoneley slownesses at high frequencies remain essentially the same as those in the open hole without a mandrel. The leaky compressional dispersion in slow formations produced by a monopole source also is perturbed at frequencies where the open-hole leaky compressional and Stoneley-wave dispersions are close to each other. Although there is a strong interference between the pipe and formation flexural modes in fast formations, such interference in slow formations occurs at very low frequencies, and the formation flexural dispersion is less affected by the presence of a drill collar at higher frequencies. Interestingly, the presence of a drill collar in a borehole causes rather small changes in the lowest-order quadrupole dispersion from the case of an open hole without a mandrel. Consequently, quadrupole logging is a preferred choice for estimating the formation shear slowness.

scholarly journals Study on the Technology of Solid Expandable Tubular in Open-Hole Well

2020 ◽  
Author(s):  
Xiaohua Zhu ◽  
Feilong Cheng ◽  
Changshuai Shi ◽  
Kailin Chen
Keyword(s):  
Theoretical Basis ◽  
Structural Parameters ◽  
Three Dimensional ◽  
Great Influence ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Open Hole ◽  
Plastic Forming ◽  
Borehole Size ◽  
Shaft Wall

Abstract During the production and drilling of open hole wells, due to the uncertainty and complexity of the rock,The naked hole section is prone to accidents such as collapse of the shaft wall and leakage. In order to solve the above problems, this paper proposes the plugging technology of solid expandable tubualr(SET) in open-hole wells. Based on experimental data,this paper established a dynamic three-dimensional model which considers friction and contact. The author puts forward the applicability criterion of open hole and studies the sensitivity parameters of expansion cone. The research results show that when SET specifications are determined, the borehole size of the open hole well has a great influence on the contact pressure, residual stress, driving force and other factors after the SET is formed, and to a certain extent affects the subsequent service. In addition, the structural parameters of the expansion cone also have a great influence on the plastic forming of SET. The results of this paper provide guidelines and theoretical basis for the use of SET technology in open hole wells.

Technical Problems to be Solved in Outside Surface Galvanized and Inside Surface Plastic Coated Steel Pipe for Main Gas Pipe Line

2011 ◽  
Vol 189-193 ◽  
pp. 595-598
Author(s):  
Bing Xin Sun ◽  
Yong Jun Pang ◽  
Yue Ting Wang ◽  
Yong Qing Bai
Keyword(s):  
Processing Technology ◽  
Galvanized Steel ◽  
Inside Surface ◽  
Steel Pipe ◽  
Surface Plastic ◽  
Coated Steel ◽  
Technical Problems ◽  
Pipe Line ◽  
Better Than

The article introduces the processing technology of outside surface galvanized and inside surface plastic-coated steel for the main gas pipe line. It shows a better processing technology through the contrast, the quality of the membrane of the hot-galvanized steel pipe of inside surface coated LLDPE under the condition of special phosphorization process is equal to that as the result of rotoblasting technology. At the same time, anti-corrosion effect is better than before because of multi-layered and differently plated coatings. A Y-interface technology of independent intellectual property rights is used in interface.

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