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1、ICS75.020E14備塞曇.14078-2004SY中華人民共和國石油天然氣行業(yè)標(biāo)準(zhǔn)SY/T6596-2004氣田水回注方法Recommendedpracticeforproduced一waterreinjectioningasfield2004一07一03發(fā)布2004一11一01實(shí)施國家發(fā)展和改革委員會發(fā)布SY/T6596-2004目次前言································································,·······················,···················??
2、n1范圍····························································································,················??12規(guī)范性引用文件······································,················································.......??13術(shù)語和定義···································,·····················
3、······,·······························,··??l4氣田水回注層和回注井的評選要求·····················,····················??,?,.···.............??15氣田水回注推薦水質(zhì)指標(biāo)··························································.········..............??26達(dá)標(biāo)回注水質(zhì)檢測分析方法與推薦水質(zhì)處理工藝流程·····································
4、···········??2參考文獻(xiàn)·······························································,·············································??4SY/T6596-2004月U呂本標(biāo)準(zhǔn)由采油采氣專業(yè)標(biāo)準(zhǔn)化委員會提出并歸口。本標(biāo)準(zhǔn)起草單位:中國石油天然氣股份有限公司西南油氣田分公司采氣工程研究院。本標(biāo)準(zhǔn)起草人:蒲蓉蓉、李小蓉、師春元、楊旭、隆守惠。SY/T6596-2004氣田水回注方法1范圍本標(biāo)準(zhǔn)規(guī)定了天然氣田水回注井和回注層的評選要求、推薦水質(zhì)指標(biāo)
5、、達(dá)標(biāo)回注水質(zhì)檢測分析方法與推薦水質(zhì)處理工藝方法。本標(biāo)準(zhǔn)適用于砂巖和碳酸鹽巖天然氣田水排污回注。2規(guī)范性引用文件下列文件中的條款通過本標(biāo)準(zhǔn)的引用而成為本標(biāo)準(zhǔn)的條款。凡是注日期的引用文件,其隨后所有的修改單(不包括勘誤的內(nèi)容)或修訂版均不適用于本標(biāo)準(zhǔn),然而,鼓勵根據(jù)本標(biāo)準(zhǔn)達(dá)成協(xié)議的各方研究是否可使用這些文件的最新版本。凡是不注日期的引用文件,其最新版本適用于本標(biāo)準(zhǔn)。GB/T692()水質(zhì)pH值的測定玻璃電極法GB/T11901水質(zhì)懸浮物的測定重量法GB/T16488水質(zhì)石油類和動植物油的測定紅外光度法SY/T5329碎屑巖油藏注水水質(zhì)推薦指標(biāo)及分析方法3術(shù)語和定義
6、下列術(shù)語和定義適用于本標(biāo)準(zhǔn)。3.1懸浮固體suspendedsolid采用平均孔徑為。45pm的纖維樹脂微孔膜過濾過程中,經(jīng)汽油或石油醚溶劑洗去原油后,殘留于微孔膜上不溶于油水的物質(zhì)。3.2懸浮物顆粒直徑中值mid-valueofsuspendedparticles'diameter水中顆粒的累積體積占顆??傮w積50%時(shí)的顆粒直徑。3.3含油oilcontent在酸性條件下,水中可以被汽油或石油醚萃取出的石油類物質(zhì)。4氣田水回注層和回注井的評選要求4.1回注層的評選要求4.1.1優(yōu)先選擇枯竭層或廢棄層。4.1.2根據(jù)當(dāng)?shù)厮牡刭|(zhì)資料,回注后不對淡水層造成影響。4
7、.1.3有足夠的儲集空間,能滿足較長期的回注要求。4.1.4上下隔離層不竄漏,注人層橫向連通性好,滿足總注人量波及范圍內(nèi)無斷層、無地表露頭或出露點(diǎn)。4.1.5有足夠的吸滲能力,不應(yīng)造成較高的泵注回壓,不應(yīng)引起回注水反注和外泄。4.1.6回注水與回注層巖性及地層水配伍性好,不應(yīng)形成二次沉淀堵塞地層4.2回注井的評選要求SY/T6596-20044.2.1套管技術(shù)狀況良好,固并質(zhì)量好、無竄槽。4.2.2油層套管應(yīng)能夠承受設(shè)計(jì)注人壓力4.2.3井口裝置密封良好,能承受設(shè)計(jì)或額定壓力,滿足泵注要求5氣田水回注推薦水質(zhì)指標(biāo)5.1水質(zhì)基本要求5.1.1回注水水質(zhì)穩(wěn)定,與地層
8、水相混合后不產(chǎn)生沉淀。5