{"id":9911,"date":"2020-01-27T16:29:48","date_gmt":"2020-01-27T16:29:48","guid":{"rendered":"https:\/\/www.westwoodenergy.com\/?p=9911"},"modified":"2025-03-17T16:52:10","modified_gmt":"2025-03-17T16:52:10","slug":"the-impact-of-dhis-on-exploration-performance","status":"publish","type":"post","link":"https:\/\/www.westwoodenergy.com\/reports\/global-ea\/the-impact-of-dhis-on-exploration-performance","title":{"rendered":"The Impact of DHIs on Exploration Performance"},"content":{"rendered":"[vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][tabbed_section style=”default” tab_change_animation=”fade” alignment=”left” spacing=”default” tab_color=”Accent-Color” vs_content_animation=”fade” vs_link_animation=”opacity” vs_navigation_alignment=”left” vs_navigation_width_2=”25%” vs_navigation_func=”default” vs_navigation_width=”regular” vs_navigation_spacing=”15px” vs_navigation_mobile_display=”visible” vs_tab_spacing=”5%”][tab icon_family=”none” title=”Report Summary” id=”1742230299682-10″ tab_id=”1742230299683-2″][vc_column_text css=”” text_direction=”default”]\n

Report Summary<\/span><\/b>\u00a0<\/span><\/h2>\n

Westwood ha<\/span>s<\/span>\u00a0<\/span>investigated\u00a0<\/span>success rates for<\/span>\u00a0exploration<\/span>\u00a0wells\u00a0<\/span>which targeted\u00a0<\/span>the five<\/span>\u00a0direct hydrocarbon indicators<\/span>\u00a0<\/span>(<\/span>DHIs<\/span>)<\/span>\u00a0most commonly reported by\u00a0companies<\/span>\u00a0pre-drill<\/span>; Flat Spot, Amplitude Anomaly,\u00a0<\/span>Amplitude vs Offset (<\/span>AVO<\/span>)<\/span>\u00a0Anomaly, Amplitude Conformance and\u00a0<\/span>Electro Magnetic (<\/span>EM<\/span>)<\/span>\u00a0Anomaly<\/span>.<\/span>\u00a0<\/span>The<\/span>\u00a0DHI<\/span>\u00a0dataset covers 53<\/span>6<\/span>\u00a0prospects with publicly reported pre-drill DHI support drilled between 2008 and 2019 (end Q3) across a range of play maturities from frontier to mature<\/span>,<\/span>\u00a0<\/span>in<\/span>\u00a0<\/span>9<\/span>5<\/span>\u00a0basins<\/span>\u00a0globally<\/span>.\u00a0<\/span>\u00a0<\/span><\/p>\n

P<\/span>rospects with\u00a0<\/span>DHIs<\/span>\u00a0<\/span>had\u00a0<\/span>a higher than average technical<\/span>\u00a0success rate<\/span>\u00a0(TSR)<\/span>\u00a0over the<\/span>\u00a0<\/span>~<\/span>12 year<\/span>\u00a0period<\/span>,<\/span>\u00a0however,<\/span>\u00a0<\/span>only<\/span> F<\/span>lat S<\/span>pots,\u00a0<\/span>had a higher\u00a0<\/span>commercial success rate<\/span>\u00a0(CSR)<\/span>\u00a0(3<\/span>9<\/span>%)<\/span>\u00a0<\/span>than the benchmark average<\/span>\u00a0(<\/span>30<\/span>%)<\/span>.\u00a0<\/span>Prospects\u00a0<\/span>with<\/span>\u00a0other<\/span>\u00a0<\/span>DHIs<\/span>\u00a0(Amplitude, AVO, Amplitude Conformance, & EM)\u00a0<\/span>were<\/span>\u00a0found to<\/span>\u00a0<\/span>have\u00a0<\/span>below\u00a0<\/span>benchmark\u00a0<\/span>commercial\u00a0<\/span>success rate<\/span>s<\/span>.<\/span>\u00a0<\/span>DHIs work<\/span>ed<\/span>\u00a0well\u00a0<\/span>for\u00a0<\/span>de<\/span>–<\/span>risking<\/span>\u00a0<\/span>the presence<\/span>\u00a0of<\/span>\u00a0<\/span>hydrocarbons but\u00a0<\/span>were\u00a0<\/span>generally\u00a0<\/span>less\u00a0<\/span>reliable\u00a0<\/span>in\u00a0<\/span>improving<\/span>\u00a0the chance of<\/span>\u00a0commercial<\/span>\u00a0success<\/span>.<\/span>\u00a0\u00a0<\/span>\u00a0<\/span><\/p>\n

\"\"
\nThe presence of a DHI was most likely to lead to a gas discovery with 71% of discoveries with reported DHIs encountering gas, gas condensate or gas and oil. 86% of discoveries with flat spots were gas rich.<\/span>\u00a0<\/span><\/p>\n

DHIs were found to be most effective in frontier\u00a0<\/span>and emerging\u00a0<\/span>plays.\u00a0<\/span>\u00a0<\/span>The<\/span>\u00a0TSR\u00a0<\/span>and CSR\u00a0<\/span>for frontier wells targeting DHIs\u00a0<\/span>were\u00a0<\/span>49<\/span>% and 16%<\/span>\u00a0respectively<\/span>, both substantially higher than the benchmark TSR\u00a0<\/span>and CSR\u00a0<\/span>for<\/span>\u00a0all<\/span>\u00a0frontier play tests of 34% of 8%.\u00a0<\/span>\u00a0<\/span><\/p>\n

In maturing and mature plays,\u00a0<\/span>prospects\u00a0<\/span>with reported DHIs had\u00a0<\/span>TSRs<\/span>\u00a0<\/span>three percentage points\u00a0<\/span>above\u00a0<\/span>the<\/span>\u00a0benchmark average<\/span>\u00a0at 5<\/span>8<\/span>%<\/span>, whilst\u00a0<\/span>the average\u00a0<\/span>CSR<\/span>\u00a0<\/span>was\u00a0<\/span>six<\/span>\u00a0percentage points\u00a0<\/span>lower than\u00a0<\/span>the benchmark at 2<\/span>8<\/span>%<\/span>.\u00a0<\/span>Mature play\u00a0<\/span>DHI<\/span>\u00a0<\/span>success rates<\/span>\u00a0globally<\/span>\u00a0<\/span>were\u00a0<\/span>brought<\/span>\u00a0down by the<\/span>\u00a0mature plays of UK, Norway and Australia<\/span>\u00a0<\/span>w<\/span>he<\/span>re\u00a0<\/span>success rates were particularly poor<\/span>.<\/span>\u00a0<\/span><\/p>\n

AVO supported prospects performed below\u00a0<\/span>the\u00a0<\/span>benchmark average<\/span>\u00a0for both TSR and CSR<\/span>\u00a0over the entire<\/span>\u00a0<\/span>period<\/span>\u00a0highlighting\u00a0<\/span>a\u00a0<\/span>potential<\/span>\u00a0systemic\u00a0<\/span>misuse of AVO<\/span>\u2019s<\/span>\u00a0as an exploration tool.\u00a0<\/span>\u00a0<\/span><\/p>\n

Commercial<\/span>\u00a0success rates for wells targeting all<\/span>\u00a0non-specific<\/span>\u00a0DHIs have shown a marked improvement in the last five-year period\u00a0<\/span>increasing from a low of\u00a0<\/span>16<\/span>% in 201<\/span>3<\/span>\u00a0to\u00a0<\/span>45<\/span>% in 2019<\/span>. In the period 2015 to 2019 Q3, CSRs for DHI wells\u00a0<\/span>averaged<\/span>\u00a034%, in line with the global benchmark. This improved performance is driven mainly by improved CSRs in wells targeting DHI supported stratigraphic trap prospects.\u00a0<\/span>The\u00a0<\/span>industry seems to have reduced the number of false positives and\u202flearned that\u202fcombining consistently well-conditioned seismic data with sound geological models is the key to applying DHIs effectively<\/span>.<\/span>\u00a0<\/span><\/p>\n[\/vc_column_text][\/tab][tab icon_family=”none” title=”Report Contents” id=”1742230299705-2″ tab_id=”1742230299706-9″][vc_column_text]\n

Contents<\/h2>\n

1.\u00a0Introduction & Dataset<\/p>\n

2.\u00a012-year performance of different types of DHI<\/p>\n

2.1 All DHI supported wells 2008-3Q 2019<\/p>\n

2.2 Wells with single DHIs versus multiple DHIs<\/p>\n

2.3 High Impact wells supported by DHIs<\/p>\n

3. DHI success rates by exploration context<\/p>\n

3.1 DHI Performance by play maturity<\/p>\n

3.2 DHI performance by reservoir age<\/p>\n

3.3 DHI success rates by basin<\/p>\n

3.4 DHI success rates by trap type (all play maturities)<\/p>\n

Stratigraphic Traps<\/p>\n

Combination Traps<\/p>\n

Faulted Traps<\/p>\n

4-way dip Traps<\/p>\n

4. DHIs and hydrocarbon phase<\/p>\n

5. DHI performance over time<\/p>\n

6. Discussion<\/p>\n

\u200b7. Conclusions[\/vc_column_text][\/tab][tab icon_family=”none” title=”Purchase Options” id=”1742230299719-5″ tab_id=”1742230299720-5″][vc_column_text css=”” text_direction=”default”]For further information on the DHI Exploration Performance report, please use the form below or contact sales@westwoodenergy.com<\/a><\/p>\n[\/vc_column_text][\/tab][\/tabbed_section][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” bg_color=”#2c293e” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”padding-3-percent” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid” column_padding_type=”default” gradient_type=”default”][vc_raw_html css=””]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[\/vc_raw_html][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"

Westwood has\u00a0investigated\u00a0success rates for\u00a0exploration\u00a0wells\u00a0which targeted\u00a0the five\u00a0direct hydrocarbon indicators\u00a0(DHIs)\u00a0most commonly reported by\u00a0companies\u00a0pre-drill.<\/p>\n","protected":false},"author":6,"featured_media":9918,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[353,347,323,48,318,335,334,325],"tags":[102,367,368,59,58,231],"class_list":{"0":"post-9911","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-all_articles","8":"category-exploration-and-production","9":"category-global-ea","10":"category-news","11":"category-reports","12":"category-sectors","13":"category-solutions","14":"category-wildcat","15":"tag-appraisal","16":"tag-dhis","17":"tag-direct-hydrocarbon-indicators","18":"tag-drilling","19":"tag-exploration","20":"tag-global-exploration"},"acf":[],"yoast_head":"\nThe Impact of DHIs on Exploration Performance - Westwood<\/title>\n<meta name=\"description\" content=\"Westwood has\u00a0investigated\u00a0success rates for\u00a0exploration\u00a0wells\u00a0which targeted\u00a0the five\u00a0direct hydrocarbon indicators\u00a0(DHIs)\u00a0most commonly reported by\u00a0companies\u00a0pre-drill; 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