Kandel Ginting

EVALUASI METODE WAIT AND WEIGHT UNTUK MENANGGULANGI PERMASALAHAN KICK PADA SUMUR DEL 0-1 LAPANGAN XYS

Introduction

Evaluasi metode wait and weight untuk menanggulangi permasalahan kick pada sumur del 0-1 lapangan xys. Evaluasi metode Wait and Weight untuk atasi kick di sumur eksplorasi DEL-01 Lapangan XYS. Analisis keberhasilan penanggulangan kick dengan lumpur berat 17.24 ppg.

Abstract

AbstrakSumur DEL-01 merupakan sumur Eksplorasi yang berada di Lapangan XYS. Saat dilakukannya pemboran vertikal lubang 8-3/8” yang menembus kedalaman 11381.79 ft pada sumur DEL-01 ini, terjadi permasalahan kick. Indikator pertama yaitu ditandai dengan drilling break yang disertai dengan bertambahnya volume di permukaan. Pada sumur DEL-01 ini, metode yang diterapkan untuk menanggulangi permasalahan kick adalah metode Wait and Weight. Parameter yang dibutuhkan dalam penanggulangan kick ini yaitu Shut In Drill Pipe Pressure, Shut In Casing Pressure, Original Mud Weight, Kill Mud Weight, Initial Circulating Pressure, Final Circulating Pressure, dan jumlah total strokes pompa yang dibutuhkan dari surface ke bit dan dari bit kembali ke surface. Indikasi kick pertama kali terdeteksi dengan pembacaan SIDPP 1050 psi danSICP 1300 psi. Lumpur yang digunakan saat pemboran berlangsung yaitu sebesar 14.91 ppg. Penanggulangan pertama dilakukan dengan metode Wait and Weight, dimana KMW yang digunakan sebesar 15.41 ppg tidak mencapai KMW perhitungan yaitu 16.66 SG, sehingga terbukti kick masih tidak dapat tertanggulangi. Penanggulangan selanjutnya dilakukan kembali metode Wait and Weight dimana kick berhasil ditanggulangi dengan densitas lumpur seberat 17.24 ppg.Hal yang menjadi kemungkinan tidak berhasilnya kegiatan well killing dalam satu kali sirkulasi saja ialah adanya kesalahan pembacaan data karena kerusakan alat maupun kesalahan manusia atau adanya kemungkinan proses shut-in sumur yang kurang lama.Kata kunci: Pengendalian Sumur, Kick, Tekanan Formasi, Metode Wait and Weight, Metode Driller AbstractThe DEL-01 well is an exploration well located in the XYS Field. In the vertical drilling of 8-3/8" hole which penetrated the depth of 11381.79 ft, occured a kick problem. The first indicator is marked by a drilling break accompanied by increasing volume on the surface. In this DEL-01 well, the method applied to overcome the kick problem is the Wait and Weight method. The parameters needed in this kick countermeasure are Shut In Drill Pipe Pressure, Shut In Casing Pressure, Original Mud Weight (OMW), Kill Mud Weight (KMW), Initial Circulating Pressure, Final Circulating Pressure, and the total number of pump strokes needed from surface to bit and back bit to surface. The first kick indication in this DEL-01well is detected with a SIDPP reading of 1050 psi and SICP 1300 psi. The mud used during drilling is 14.91 ppg. The first countermeasure was carried out by the Wait and Weight method was by using 15.41 ppg mud as the KMW, where the KMW that was supposed to be circulated was 16.66 ppg. This means that the kick was still insurmountable. Wait and Weight method where the kick is successfully overcome by the density of mud weighing 17.24 ppg. Several factors which arelikely make the well killing doesn't work in one circulation is the error in reading the data due to damage to the tool or human error or the possibility of a long-term shut-in of the well.Keyword: Well Control, Kick, Formation Pressure, Wait and Weight Method, Drilling Problems, Abnormal Pressure

Review

The submitted paper presents a concise case study on the application and challenges of the Wait and Weight method for kick control in the DEL-01 exploration well, XYS Field. The study addresses a critical operational issue encountered during drilling at a depth of 11381.79 ft, where a kick was detected through drilling break and increased surface volume. The abstract details the sequential attempts to mitigate the kick, providing key parameters such as Shut In Drill Pipe Pressure (SIDPP), Shut In Casing Pressure (SICP), Original Mud Weight (OMW), and Kill Mud Weight (KMW). The primary finding highlights an initial unsuccessful attempt with an incorrectly low KMW of 15.41 ppg, despite a calculated KMW of 16.66 ppg, followed by a successful resolution using a higher mud weight of 17.24 ppg in a subsequent circulation. This demonstrates the practical complexities of well control operations. The strength of this abstract lies in its focus on a real-world problem with specific operational data, which is highly valuable for practitioners in the drilling industry. It effectively illustrates that well control is not always a straightforward process, often requiring iterative attempts and adjustments. The authors candidly identify potential reasons for the initial failure, including errors in data reading due to equipment damage or human error, and insufficient shut-in time. However, the abstract could benefit from a clearer exposition of the sequence of KMW calculations and applications. Specifically, further clarification is needed regarding why an initial KMW of 15.41 ppg was circulated when the calculation indicated 16.66 ppg. A more detailed explanation of how the ultimately successful 17.24 ppg KMW was derived—whether through recalculation due to updated formation pressure estimates or other factors—would enhance the understanding of the problem-solving process. Overall, this work contributes important insights into the practical aspects of well control, particularly for exploration wells where formation pressures can be less predictable. The findings underscore the critical importance of accurate data acquisition, precise calculations, and meticulous execution during kick mitigation. For a full paper, expanding on the root causes of the initial KMW discrepancy and detailing the recalculation leading to the successful kill mud weight would significantly strengthen the study's analytical depth. Such an expansion, perhaps including a comparison of the Driller's Method (as mentioned in keywords) if relevant to the decision-making process, would provide a more comprehensive guide for preventing and managing similar kick events in the future, thus maximizing its utility to the drilling community.

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